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ANAC Agricultural Pilot Airplane (PAGA) study materials
ANAC Agricultural Pilot Airplane (PAGA) study resources

ANAC Agricultural Pilot Airplane (PAGA) practice questions

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Question 1Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Under Brazilian civil aviation rules, which document certifies that an aircraft is airworthy and authorized to operate for agricultural aviation activities?

  1. The pilot's medical certificate
  2. The Airworthiness Certificate Correct answer.
  3. The operator's agricultural registration
  4. The insurance policy

Explanation

The Airworthiness Certificate is the document issued by the competent authority confirming that the aircraft meets the applicable airworthiness requirements and may legally be operated. The agricultural registration authorizes the activity, not the aircraft's airworthiness, and personal or insurance documents do not certify the aircraft itself.

Question 2Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

For an agricultural aviation operation, what is the primary purpose of the operator's Certificate of Authorization for Aerial Application (registration as an agricultural operator)?

  1. To authorize the company to carry out aerial application activities Correct answer.
  2. To replace the aircraft maintenance records
  3. To serve as the pilot's license
  4. To certify the aircraft's radio equipment

Explanation

The agricultural operator registration is the administrative authorization that allows a company or individual to perform aerial application activities under the applicable RBAC. It is a corporate authorization and does not substitute for maintenance records, pilot licensing, or equipment certification.

Question 3Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which of the following best describes the role of the Aeronautical Information Publication (AIP) in planning an agricultural flight?

  1. It records the pilot's flight hours
  2. It contains the aircraft's maintenance schedule
  3. It lists the chemical products approved for each crop
  4. It provides permanent aeronautical information such as airspace, aerodromes and procedures Correct answer.

Explanation

The AIP is the official publication containing permanent aeronautical information essential to flight planning, including airspace structures, aerodrome data and established procedures. It is not a maintenance log, a chemical approval list, or a personal flight record.

Question 4Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Before beginning an agricultural application flight, the pilot must verify that the aircraft's documentation is on board and valid. Which item is required to be carried aboard the aircraft?

  1. The Certificate of Registration Correct answer.
  2. The crop spraying contract
  3. The pilot's employment contract
  4. The company's tax identification card

Explanation

The Certificate of Registration is among the documents that must be carried on board the aircraft during operation, together with other required certificates. Commercial, employment and contractual papers are administrative matters kept by the operator and are not aircraft-carried documents.

Question 5Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An agricultural pilot's license becomes invalid for flight operations when which of the following occurs?

  1. The pilot's medical certificate expires Correct answer.
  2. The aircraft's paint scheme is altered
  3. The pilot changes home address
  4. The pilot changes spraying contractors

Explanation

Flight crew qualifications depend on a valid medical certificate; once it expires the pilot may not exercise the privileges of the license. Administrative changes such as a new address, contractor or aircraft appearance do not invalidate the license.

Question 6Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

What is the purpose of the flight logbook (diário de bordo) in agricultural aviation operations?

  1. To record flight times and operational data required for regulatory oversight Correct answer.
  2. To document the chemical application rates only
  3. To replace the aircraft maintenance records
  4. To authorize operations in restricted airspace

Explanation

The flight logbook records flight times and operational data that support regulatory oversight, crew experience tracking and operational control. It does not replace maintenance records, is not limited to chemical data, and cannot by itself authorize entry into restricted airspace.

Question 7Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which authority is responsible for issuing and enforcing the RBAC regulations applicable to agricultural aviation in Brazil?

  1. ANAC, the national civil aviation agency Correct answer.
  2. The Ministry of Agriculture alone
  3. The aircraft manufacturer
  4. The municipal environmental secretariat

Explanation

ANAC is the national civil aviation authority responsible for issuing and enforcing civil aviation regulations, including those governing agricultural aviation. Other bodies may have related roles, but they do not issue the civil aviation rules themselves.

Question 8Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An operator wishes to conduct aerial application near a populated area. What is the most appropriate regulatory consideration before the flight?

  1. Relying on the aircraft's airworthiness certificate alone
  2. Assuming that any area may be sprayed if the pilot holds a license
  3. Consulting only the chemical supplier
  4. Verifying whether the operation is permitted under the applicable RBAC and any local restrictions Correct answer.

Explanation

Operations near populated areas are subject to specific restrictions and conditions in the applicable regulations and may require additional coordination with local authorities. Holding a license or an airworthiness certificate does not authorize unrestricted spraying, and the chemical supplier has no regulatory role.

Question 9Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which document establishes the maintenance program that an agricultural aircraft operator must follow to keep the aircraft airworthy?

  1. The pilot's personal flight logbook
  2. The aerial application contract
  3. The aerodrome operating manual
  4. The approved maintenance program contained in the aircraft's technical documentation Correct answer.

Explanation

The approved maintenance program, contained in the aircraft's technical documentation, defines the inspections and servicing required to maintain airworthiness. The pilot's logbook, application contract and aerodrome manual do not contain aircraft maintenance requirements.

Question 10Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An agricultural pilot's license is endorsed for a specific aircraft category. What must the pilot do before operating a different category of agricultural aircraft?

  1. Simply log the flight in the logbook afterward
  2. Change the aircraft's registration
  3. Notify the chemical supplier
  4. Obtain the appropriate category or type qualification for that aircraft Correct answer.

Explanation

A pilot may only exercise the privileges for the category or type for which the license is endorsed, so an additional qualification is required before flying a different category. Logging the flight afterward, notifying a supplier, or changing registration does not confer the required qualification.

Question 11Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

What is the function of the Special Airworthiness Certificate in certain agricultural aircraft operations?

  1. To replace the Certificate of Registration
  2. To authorize the sale of the aircraft
  3. To permit operation of aircraft that meet specific conditions defined for restricted or special use Correct answer.
  4. To certify the pilot's competency

Explanation

A Special Airworthiness Certificate may be issued for aircraft that comply with specific conditions for restricted or special operations, such as agricultural use. It addresses the aircraft's airworthiness status and does not certify pilot competency, authorize sales, or replace registration.

Question 12Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An operator must report an accident involving an agricultural aircraft. Which action best reflects the regulatory obligation?

  1. Notify the aviation authority promptly and preserve relevant evidence Correct answer.
  2. Wait until the next scheduled maintenance inspection
  3. Report only to the chemical supplier
  4. Discuss the event only with the landowner

Explanation

Accident reporting rules require prompt notification to the aviation authority and preservation of evidence to support the investigation. Delaying until maintenance, reporting only to a supplier, or limiting discussion to the landowner would not satisfy the regulatory obligation.

Question 13Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which of the following is a valid requirement for the validity of an agricultural operator's authorization?

  1. Operating without any records to reduce administrative burden
  2. Maintaining the operational and safety conditions under which the authorization was granted Correct answer.
  3. Using any aircraft regardless of its registration status
  4. Transferring the authorization to any interested third party

Explanation

An authorization remains valid only while the operator continues to meet the conditions under which it was granted, including operational and safety requirements. Authorizations are not freely transferable, records must be kept, and aircraft must be properly registered.

Question 14Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

What information is typically contained in the aircraft's technical records for agricultural operations?

  1. Maintenance actions, inspections and airworthiness compliance data Correct answer.
  2. Only the commercial invoices for fuel
  3. Only the pilot's flight hours
  4. Only the chemical application results

Explanation

Technical records document maintenance actions, inspections and compliance with airworthiness requirements, allowing the aircraft's condition to be traced. Pilot hours, application results and fuel invoices belong to other records and do not constitute technical maintenance records.

Question 15Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An agricultural pilot is asked to spray a field located inside a restricted airspace area. What is the correct regulatory approach?

  1. Obtain the necessary authorization or coordination before entering the area Correct answer.
  2. Rely on the aircraft's transponder to gain automatic permission
  3. Enter the area without notice because agricultural flights are exempt
  4. Ask the landowner to authorize the entry

Explanation

Entry into restricted airspace requires prior authorization or coordination with the controlling authority, regardless of the nature of the flight. There is no general exemption for agricultural flights, equipment does not grant automatic permission, and a landowner cannot authorize airspace entry.

Question 16Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which statement correctly describes the relationship between the operator's authorization and the aircraft used in agricultural aviation?

  1. The aircraft's registration is irrelevant if the operator is authorized
  2. The authorization automatically covers any aircraft type without restriction
  3. The aircraft must be registered and airworthy and be operated within the scope of the operator's authorization Correct answer.
  4. Any aircraft may be used as long as the pilot is licensed

Explanation

The operator must use aircraft that are properly registered and airworthy and must operate within the scope defined in its authorization. A licensed pilot alone does not legitimize an unregistered aircraft, registration is not irrelevant, and authorizations do not automatically extend to any type.

Question 17Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Why must an agricultural operator keep records of chemical products used during application flights?

  1. To replace the aircraft's maintenance program
  2. To serve as proof of pilot licensing
  3. To avoid the need for airworthiness certification
  4. To support traceability, regulatory oversight and environmental accountability Correct answer.

Explanation

Records of chemical products support traceability, allow regulatory oversight and provide accountability for environmental and agricultural compliance. They do not substitute for maintenance programs, pilot licensing or airworthiness certification.

Question 18Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

A pilot's license lists an endorsement for agricultural aviation. What does this endorsement signify?

  1. The pilot is qualified to perform aerial application activities within the privileges of the license Correct answer.
  2. The pilot may operate any aircraft category without further training
  3. The pilot may authorize other pilots to spray
  4. The pilot is exempt from medical certification

Explanation

An agricultural endorsement indicates that the pilot has met the requirements to perform aerial application within the privileges of the license. It does not extend privileges to other categories, waive medical requirements, or confer authority over other pilots.

Question 19Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

What is the regulatory significance of the aircraft's Certificate of Registration during an inspection?

  1. It proves the aircraft's maintenance is current
  2. It identifies the aircraft and confirms its registration status with the authority Correct answer.
  3. It certifies the pilot's competence
  4. It authorizes the chemical products used

Explanation

The Certificate of Registration identifies the aircraft and confirms that its registration status is valid with the authority. It does not attest to maintenance currency, pilot competence or chemical approvals, which are governed by separate documents and rules.

Question 20Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An operator plans to expand agricultural operations to a new region with different airspace characteristics. What should be done first from a regulatory perspective?

  1. Delegate the review to the chemical supplier
  2. Assume the existing authorization covers all regions without review
  3. Begin operations and inform the authority afterward
  4. Review the applicable aeronautical information and any regional restrictions before operating Correct answer.

Explanation

Before operating in a new region, the operator should review the applicable aeronautical information and regional restrictions to ensure compliance. Assuming blanket coverage, operating first and informing later, or delegating to a supplier would not satisfy regulatory diligence.

Question 21Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which situation would most likely require the operator to seek an additional authorization before conducting an agricultural flight?

  1. Flying the same route as the previous day
  2. Operating outside the scope of activities defined in the existing authorization Correct answer.
  3. Changing the time of day of the flight
  4. Using a different pilot within the same company

Explanation

An authorization is limited to the scope for which it was granted, so activities outside that scope require additional approval. Routine variations such as the same route, another qualified pilot, or a different time do not by themselves exceed the authorization.

Question 22Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

How do airworthiness directives affect an agricultural aircraft's continued operation?

  1. They must be complied with within the specified limits to maintain airworthiness Correct answer.
  2. They replace the need for routine maintenance
  3. They apply only to transport category aircraft
  4. They are advisory and may be ignored at the operator's discretion

Explanation

Airworthiness directives are mandatory actions that must be accomplished within the stated compliance times to keep the aircraft airworthy. They are not optional advice, may apply to the affected aircraft regardless of category, and do not replace routine maintenance.

Question 23Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An operator discovers that a required document is missing during a pre-flight check. What is the most appropriate regulatory action?

  1. Record the omission only in the chemical log
  2. Proceed with the flight and complete the paperwork later
  3. Ask the landowner to confirm the flight is acceptable
  4. Resolve the missing documentation before commencing the flight Correct answer.

Explanation

Required documents must be valid and on board before flight, so any deficiency should be resolved before departure. Proceeding and correcting later, relying on a landowner's acceptance, or logging the omission elsewhere would not satisfy the requirement.

Question 24Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which factor most directly determines whether an agricultural flight requires prior coordination with air traffic control?

  1. The airspace classification and the restrictions applicable to the intended area of operation Correct answer.
  2. The color of the aircraft
  3. The brand of chemical product used
  4. The number of years the pilot has held a license

Explanation

Coordination with air traffic control depends on the classification of the airspace and the restrictions applicable to the area where the flight will occur. Aircraft appearance, pilot seniority and chemical brand do not determine airspace access requirements.

Question 25Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

What is the primary regulatory purpose of requiring an operator to maintain an operational control structure in agricultural aviation?

  1. To eliminate the need for pilot licensing
  2. To transfer responsibility to the chemical supplier
  3. To increase the number of flights performed daily
  4. To ensure flights are planned, conducted and supervised in compliance with applicable rules Correct answer.

Explanation

Operational control ensures that flights are properly planned, conducted and supervised in accordance with the regulations, supporting safety and compliance. It is not a mechanism to increase flight volume, waive licensing, or shift responsibility to a supplier.

Question 26Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Under RBAC/ANAC rules, what is the minimum age requirement for a pilot to hold an agricultural aviation license (PAGA)?

  1. 21 years
  2. 20 years
  3. 18 years Correct answer.
  4. 19 years

Explanation

ANAC regulations require an applicant for an agricultural pilot license to be at least 18 years old, consistent with the minimum age for commercial pilot licenses in Brazil. This ensures the pilot has reached legal adulthood and can be held fully responsible for operational decisions.

Question 27Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

Which document must an agricultural aircraft operator present to ANAC to demonstrate that the aircraft is maintained according to an approved maintenance program?

  1. The pilot's flight logbook
  2. The maintenance control manual and associated maintenance records Correct answer.
  3. The operator's insurance policy
  4. The aircraft's Certificate of Registration

Explanation

ANAC requires operators to maintain an approved maintenance program documented in a maintenance control manual, supported by records showing compliance with scheduled inspections and airworthiness directives. These records are the primary evidence that the aircraft remains airworthy for agricultural operations.

Question 28Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An agricultural pilot is scheduled to apply pesticides on a field located within 5 km of a town. Which regulatory action is most appropriate before the flight?

  1. Notify the local municipality and obtain written consent from residents
  2. Proceed with the application because agricultural flights are exempt from airspace restrictions
  3. Coordinate with the appropriate air traffic control authority and verify any applicable restrictions or NOTAMs Correct answer.
  4. Delay the flight until after sunset to reduce visibility of the operation

Explanation

Operations near populated areas may affect controlled airspace and require coordination with air traffic control, as well as review of NOTAMs and local restrictions. The pilot must verify the airspace classification and any applicable limitations before conducting the application.

Question 29Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

What is the primary purpose of the operator's authorization issued by ANAC for agricultural aviation activities?

  1. To register the aircraft's ownership with the national civil aviation registry
  2. To approve the chemical products used in agricultural applications
  3. To authorize the operator to conduct specific agricultural aviation operations under defined conditions and oversight Correct answer.
  4. To certify the pilot's medical fitness for agricultural flying

Explanation

ANAC issues an operator's authorization that permits the company to perform agricultural aviation operations within specified scope, conditions, and oversight requirements. It is distinct from pilot licensing, aircraft registration, and chemical approval, which are handled through separate processes.

Question 30Regulations and administrative procedures applicable to agricultural aviation (RBAC/ANAC rules, documentation, operational authorizations)

An operator's agricultural aircraft is subject to a new airworthiness directive (AD) issued by ANAC. What is the most appropriate regulatory response?

  1. Ground the aircraft until the AD is complied with or an approved alternative method of compliance is obtained Correct answer.
  2. Continue operations until the next scheduled annual inspection, then assess the AD
  3. Record the AD in the aircraft logbook but defer compliance until the next major maintenance
  4. Apply for an exemption from the AD because agricultural operations are seasonal

Explanation

Airworthiness directives are mandatory and must be complied with within the specified timeframe; continued operation without compliance is not permitted unless an approved alternative method of compliance is granted. The operator must ensure the aircraft is not flown until the AD requirement is satisfied.

Question 31Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

During a preflight inspection of an agricultural airplane, the pilot finds the hopper gate linkage moves freely but the gate does not fully close. What is the most appropriate action before flight?

  1. Reduce the hopper load to half and depart as scheduled
  2. Lubricate the linkage and defer the repair until the next scheduled inspection
  3. Fly the aircraft and rely on the emergency dump if leakage becomes excessive
  4. Have the linkage adjusted and the gate rigged per the maintenance manual, then verify full closure Correct answer.

Explanation

A gate that does not fully close allows chemical to leak or dribble during flight, which is both a safety and environmental hazard. The correct response is to have the system rigged to the manufacturer's specifications and functionally checked before flight. Deferring or compensating with operating techniques does not restore airworthiness.

Question 32Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

On a piston engine agricultural airplane, what is the primary purpose of the engine air filter in the induction system?

  1. To cool the induction air before it reaches the cylinders
  2. To increase manifold pressure at low altitude
  3. To prevent dust and chemical particles from entering the engine and causing wear Correct answer.
  4. To separate fuel vapor from the intake charge

Explanation

Agricultural aircraft operate from strips and fields where dust, soil, and chemical particles are abundant. The induction air filter traps these contaminants to protect cylinders and internal engine components from abrasive wear. It does not cool the charge, boost manifold pressure, or separate fuel vapor.

Question 33Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What is the purpose of the spray boom nozzle check valve?

  1. To prevent the propeller from striking the boom
  2. To regulate engine rpm during application passes
  3. To keep the boom line charged and prevent drip after the spray valve closes Correct answer.
  4. To measure the total volume of chemical applied

Explanation

Nozzle check valves or diaphragms close when pump pressure is removed so the boom does not drain and drip onto the field or runway. This keeps lines primed for the next pass and reduces off-target contamination. They do not control engine speed, meter volume, or protect the propeller.

Question 34Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

An agricultural airplane's propeller shows a small nick on the leading edge of one blade. Which action is correct?

  1. Fill the nick with epoxy and return to service without blending
  2. Shorten the blade tip to restore the original profile
  3. Ignore it because leading-edge nicks are normal on working aircraft
  4. Blend the nick out within the limits in the maintenance manual and check balance Correct answer.

Explanation

Leading-edge damage creates stress concentrations that can progress to cracks, so it must be dressed out using approved limits. Blending within limits restores the profile, and rebalancing prevents vibration. Ignoring or filling the nick leaves the stress riser in place.

Question 35Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

Which document normally contains the inspection intervals and procedures that must be followed for an agricultural airplane's spray system?

  1. The aircraft maintenance manual and the operator's approved maintenance program Correct answer.
  2. The pilot's personal logbook
  3. The aircraft flight manual performance charts
  4. The chemical label only

Explanation

Inspection intervals and procedures come from the manufacturer's maintenance documentation together with the operator's approved maintenance program. These sources define what to inspect and how often. A pilot logbook, performance charts, and chemical labels do not contain airframe inspection procedures.

Question 36Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What is the function of the hopper agitation system on an agricultural airplane?

  1. To cool the chemical before application
  2. To pressurize the hopper for faster dumping
  3. To keep the chemical mixture uniform and prevent settling during flight Correct answer.
  4. To filter large particles out of the spray mixture

Explanation

Many chemicals settle or separate if left standing, which changes the concentration being applied. Agitation keeps the mixture homogeneous so each nozzle delivers the intended rate. It does not pressurize the hopper, cool the product, or act as a filter.

Question 37Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

A pilot notices the spray pressure gauge fluctuates rapidly during an application pass. Which condition is the most likely cause?

  1. A correctly operating pressure relief valve
  2. Normal nozzle wear at the boom tips
  3. Air entering the pump inlet line Correct answer.
  4. A full hopper at the start of the pass

Explanation

Air drawn into the pump inlet causes cavitation and rapid pressure fluctuation, which also produces uneven spray patterns. The inlet plumbing and tank outlet should be checked for leaks or restrictions. A relief valve, nozzle wear, and a full hopper do not produce this rapid oscillation.

Question 38Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What is the correct way to verify that spray nozzles are delivering the intended pattern before an application flight?

  1. Estimate flow by watching the spray behind the aircraft in flight
  2. Assume the nozzles are correct if they were new at the start of the season
  3. Perform a pattern test with water on a calibrated surface and compare to the specification Correct answer.
  4. Check only that each nozzle is physically present

Explanation

Pattern testing with water on a calibrated surface reveals worn, plugged, or mismatched nozzles and confirms swath uniformity. Visual estimates in flight cannot show distribution accurately. Age of nozzles and mere presence do not confirm output.

Question 39Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

An agricultural airplane is found with a loose engine mount bolt during inspection. What is the correct course of action?

  1. Leave it loose and monitor for vibration on the next flight
  2. Replace the entire engine mount without further inspection
  3. Apply thread sealant and hand-tighten the bolt
  4. Torque the bolt to the specified value and inspect the remaining mount hardware Correct answer.

Explanation

Loose engine mount hardware can allow movement that cracks the mount or fatigues the bolts. The correct action is to torque to specification and inspect the rest of the attachment hardware for related damage. Simply monitoring, replacing the whole mount, or hand-tightening does not restore correct attachment.

Question 40Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

Why must the spray system be thoroughly flushed with clean water after applying a chemical?

  1. To lubricate the pump seals with chemical residue
  2. To remove residues that could corrode components and contaminate the next load Correct answer.
  3. To increase the weight of the aircraft for better stability
  4. To keep the nozzles warm between flights

Explanation

Many agricultural chemicals are corrosive or incompatible with one another, and dried residue can clog lines and nozzles. Flushing removes residues, protects components, and prevents cross-contamination of subsequent loads. Flushing adds no useful weight, does not lubricate seals, and has no thermal purpose.

Question 41Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

During a run-up, the engine of an agricultural airplane produces less than normal static rpm at full throttle. Which cause is most consistent with this symptom?

  1. A correctly set idle mixture
  2. A slightly high tire pressure
  3. A new spark plug of the correct grade
  4. A partially blocked induction air filter Correct answer.

Explanation

A restricted induction filter reduces airflow and therefore limits the power the engine can produce at full throttle. Static rpm below the manual value points to an intake restriction or similar power loss. Correct idle mixture, proper plugs, and tire pressure do not reduce full-throttle rpm.

Question 42Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What inspection should be performed on the propeller hub and blades after a reported propeller strike with a foreign object?

  1. Only a check of the propeller spinner for dents
  2. A visual check from the cockpit before the next flight
  3. A detailed inspection for cracks, blade damage, and hub condition per the maintenance manual Correct answer.
  4. No inspection if the engine still runs smoothly

Explanation

A propeller strike can introduce hidden cracks and internal damage even when the engine appears to run normally. The maintenance manual prescribes a detailed inspection of blades, hub, and related engine components. A quick visual check or reliance on smooth running can miss serious damage.

Question 43Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

An operator wants to increase the spray rate by increasing pressure. What effect does higher spray pressure have on droplet size?

  1. It generally produces smaller droplets and increases drift potential Correct answer.
  2. It changes only the color of the spray
  3. It produces larger droplets and reduces drift potential
  4. It has no effect on droplet size at any pressure

Explanation

For a given nozzle, raising pressure forces the liquid through faster and shatters it into finer droplets. Smaller droplets are more easily carried off target by wind, so drift risk rises. Larger droplets and no effect are both incorrect descriptions of nozzle behavior.

Question 44Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What is the purpose of the emergency jettison or dump system on an agricultural airplane?

  1. To transfer chemical to a second tank in flight
  2. To spray chemical at a higher rate over the target
  3. To rapidly release the hopper load to reduce weight in an emergency Correct answer.
  4. To clean the hopper between loads

Explanation

The dump system allows the pilot to shed a heavy hopper load quickly, for example during an engine failure after takeoff. Reducing weight improves climb and glide performance. It is not a high-rate application tool, a cleaning method, or a transfer system.

Question 45Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

During inspection, corrosion is found on the lower fuselage structure near the hopper. What is the most likely reason this area is prone to corrosion?

  1. Repeated exposure to chemical spills and wash water that collect in low areas Correct answer.
  2. Use of the parking brake
  3. Excessive engine oil consumption
  4. High-altitude cruise operation

Explanation

Agricultural chemicals and wash water are corrosive and tend to pool in low fuselage areas around the hopper and belly. Without thorough cleaning and inspection, this trapped moisture attacks the structure. Oil consumption, cruise altitude, and parking brakes do not cause this localized corrosion.

Question 46Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What does the spray system flowmeter allow the pilot to verify during an application pass?

  1. That the landing gear is down and locked
  2. That the actual application rate matches the planned rate Correct answer.
  3. That the engine is developing rated horsepower
  4. That the propeller is within balance limits

Explanation

A flowmeter measures the volume of spray passing through the system per unit time, which the pilot compares with the planned rate. This confirms the nozzles and pump are delivering as intended. It does not measure engine power, propeller balance, or gear position.

Question 47Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

A pilot observes that the spray pattern is heavier on one side of the aircraft's swath. Which factor should be checked first?

  1. The seat belt attachment
  2. The engine oil level
  3. The altimeter setting
  4. Nozzle condition and alignment on the boom Correct answer.

Explanation

Uneven swath distribution usually points to differences in nozzle size, wear, orientation, or blockage along the boom. Checking and correcting nozzle condition and alignment addresses the most direct cause. Engine oil, altimeter setting, and seat belts do not affect spray distribution.

Question 48Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

Why is a post-flight inspection of the spray system especially important on an agricultural airplane?

  1. It replaces the need for scheduled maintenance
  2. It identifies leaks, damage, and loose components caused by the flight and chemical exposure Correct answer.
  3. It allows the pilot to skip the preflight inspection next time
  4. It confirms the aircraft's empty weight

Explanation

Application flights expose the spray system to vibration, chemical attack, and possible contact with obstacles. A post-flight inspection catches leaks, chafing, and loose fittings while they are fresh. It does not substitute for scheduled maintenance, replace preflight checks, or determine empty weight.

Question 49Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

An engine in an agricultural airplane shows a gradual loss of oil pressure during a long application flight. What is the most appropriate pilot action?

  1. Increase power to raise oil pressure
  2. Ignore it because oil pressure varies with temperature
  3. Continue the application and monitor the gauge
  4. Reduce power, return to the nearest suitable landing area, and investigate the cause Correct answer.

Explanation

A steady decline in oil pressure can indicate a developing mechanical failure, and continued operation risks engine seizure. The safe response is to reduce power, land as soon as practical, and have the cause investigated. Continuing, adding power, or dismissing the trend can lead to catastrophic failure.

Question 50Aircraft and agricultural equipment: airframe, engine, propeller, spray/application systems and their inspection

What is the significance of the propeller governor setting on an agricultural airplane during application work?

  1. It sets the altimeter to field elevation
  2. It maintains the selected engine rpm as load and airspeed change Correct answer.
  3. It adjusts the trim tab for the hopper load
  4. It controls the spray pump output directly

Explanation

The propeller governor adjusts blade pitch to hold the rpm selected by the pilot as power and airspeed vary during passes. Stable rpm supports consistent engine output and spray performance. It does not drive the spray pump, set the altimeter, or move trim tabs.