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CAAP AMT Knowledge Exam practice questions

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Question 1Philippine Civil Aviation Regulations and CAAP Requirements

Under the Philippine Civil Aviation Regulations, which document issued by the CAAP certifies that an individual is qualified to perform maintenance on Philippine-registered aircraft?

  1. Aircraft Maintenance Specialist Certificate Correct answer.
  2. Airworthiness Certificate
  3. Air Operator Certificate
  4. Certificate of Registration

Explanation

The CAAP issues an Aircraft Maintenance Specialist Certificate (AMSC) to individuals who meet the training and experience requirements to perform and certify maintenance. The Airworthiness Certificate and Certificate of Registration apply to the aircraft itself, while the Air Operator Certificate authorizes commercial air transport operations.

Question 2Philippine Civil Aviation Regulations and CAAP Requirements

Which CAAP document prescribes the rules governing the licensing of aircraft maintenance personnel in the Philippines?

  1. PCAR Part 2
  2. PCAR Part 11
  3. PCAR Part 8 Correct answer.
  4. PCAR Part 4

Explanation

PCAR Part 8 covers aircraft maintenance personnel licensing, including eligibility, examination, and privileges for maintenance specialists and related ratings. Other parts address different areas such as personnel licensing for flight crew or airworthiness of products.

Question 3Philippine Civil Aviation Regulations and CAAP Requirements

A licensed Aircraft Maintenance Specialist is asked to sign off a major repair on a Philippine-registered aircraft. Which approval must the repair hold before it can be returned to service?

  1. An endorsement from the pilot-in-command
  2. An approval from the CAAP for the major repair design and data Correct answer.
  3. A verbal concurrence from the operator's chief pilot
  4. An approval issued by the aircraft manufacturer only

Explanation

Major repairs and major alterations require approved design data, and under Philippine rules the CAAP must approve the repair or alteration before the aircraft returns to service. Manufacturer data alone is not automatically approved unless it is part of the type certificate or otherwise accepted by the CAAP.

Question 4Philippine Civil Aviation Regulations and CAAP Requirements

What is the primary purpose of a Certificate of Airworthiness issued by the CAAP?

  1. To record the aircraft's ownership and nationality
  2. To license the maintenance organization that services the aircraft
  3. To authorize the holder to conduct commercial flights
  4. To certify that the aircraft complies with its approved type design and is safe to operate Correct answer.

Explanation

A Certificate of Airworthiness confirms that the aircraft conforms to its approved type design and is in a condition for safe operation. It is issued after conformity and airworthiness inspections and must be maintained through continued compliance.

Question 5Philippine Civil Aviation Regulations and CAAP Requirements

Under PCAR Part 4, within what period must the owner of a Philippine-registered aircraft notify the CAAP of a change in ownership?

  1. Within 30 days of the transfer Correct answer.
  2. Within 60 days of the transfer
  3. Within 7 days of the transfer
  4. Within 90 days of the transfer

Explanation

PCAR Part 4 requires the registered owner to notify the CAAP of a change in ownership within 30 days so the registration records can be updated. Prompt notification ensures the aircraft's nationality and registration records remain accurate.

Question 6Philippine Civil Aviation Regulations and CAAP Requirements

Which of the following best describes the role of the CAAP in relation to Philippine civil aviation?

  1. It sets airline ticket prices
  2. It regulates civil aviation safety and oversees aviation personnel and organizations Correct answer.
  3. It provides air navigation services only to military aircraft
  4. It operates all commercial airports in the country

Explanation

The CAAP is the national civil aviation authority responsible for regulating and promoting aviation safety, including licensing personnel, certifying organizations, and overseeing airworthiness. It does not itself operate all airports or set airfares.

Question 7Philippine Civil Aviation Regulations and CAAP Requirements

An aircraft maintenance organization wants to perform maintenance on Philippine-registered aircraft used in commercial air transport. Which approval must it obtain from the CAAP?

  1. An Air Operator Certificate
  2. A maintenance organization approval or certificate Correct answer.
  3. An export certificate of airworthiness
  4. A Certificate of Registration

Explanation

Organizations performing maintenance on aircraft used in commercial air transport must hold a maintenance organization approval issued by the CAAP. This approval defines the scope of work and the standards the organization must follow.

Question 8Philippine Civil Aviation Regulations and CAAP Requirements

What is the validity period of an Aircraft Maintenance Specialist Certificate issued by the CAAP?

  1. It is valid for one year and must be renewed annually
  2. It is valid indefinitely unless surrendered
  3. It is valid only for the duration of a single maintenance task
  4. It is valid for five years from the date of issue Correct answer.

Explanation

An Aircraft Maintenance Specialist Certificate is generally issued with a validity of five years, after which renewal is required subject to the CAAP's renewal requirements. The certificate is not tied to a single task or issued indefinitely.

Question 9Philippine Civil Aviation Regulations and CAAP Requirements

Which regulation addresses the continuing airworthiness requirements for Philippine-registered aircraft?

  1. PCAR Part 6
  2. PCAR Part 9
  3. PCAR Part 7
  4. PCAR Part 5 Correct answer.

Explanation

PCAR Part 5 covers airworthiness and continuing airworthiness requirements, including maintenance programs and airworthiness directives. It establishes how aircraft remain compliant after initial certification.

Question 10Philippine Civil Aviation Regulations and CAAP Requirements

A maintenance specialist discovers that an airworthiness directive applies to an aircraft engine. What action is required?

  1. The directive may be deferred indefinitely if the engine is operating normally
  2. The directive can be ignored if the operator disagrees with it
  3. The directive must be complied with within the stated compliance time and the action recorded Correct answer.
  4. The directive applies only to aircraft registered in the issuing country

Explanation

Airworthiness directives are mandatory and must be complied with within the specified compliance time, with the action recorded in the maintenance records. Non-compliance renders the aircraft unairworthy until the directive is addressed.

Question 11Philippine Civil Aviation Regulations and CAAP Requirements

Which of the following is a privilege granted to a holder of an Aircraft Maintenance Specialist Certificate with the appropriate ratings?

  1. To approve major alterations without further approval
  2. To issue Certificates of Airworthiness on behalf of the CAAP
  3. To certify maintenance and inspection work within the scope of the rating held Correct answer.
  4. To act as pilot-in-command on maintenance test flights

Explanation

An AMSC holder may certify maintenance, preventive maintenance, or inspection within the limits of the ratings held. Broader approvals such as issuing airworthiness certificates or approving major alterations remain with the CAAP or specially authorized personnel.

Question 12Philippine Civil Aviation Regulations and CAAP Requirements

What must an applicant demonstrate to qualify for an Aircraft Maintenance Specialist Certificate in the Philippines?

  1. A pilot license with instrument rating
  2. Documented training and experience plus passing the required examinations Correct answer.
  3. Ownership of a maintenance facility
  4. Only a written examination with no experience requirement

Explanation

Eligibility for an AMSC requires documented training and practical experience in the relevant specialty, along with passing the required knowledge and practical examinations. Ownership of facilities or pilot qualifications are not the governing criteria.

Question 13Philippine Civil Aviation Regulations and CAAP Requirements

Under PCAR Part 6, what is required before an approved maintenance organization may return an aircraft to service after maintenance?

  1. An endorsement from the airport authority
  2. A fresh export certificate
  3. A new Certificate of Registration
  4. A release to service signed by authorized certifying staff Correct answer.

Explanation

After maintenance, the aircraft or component must be released to service by authorized certifying staff within the scope of the organization's approval. This release confirms that the work was performed and inspected in accordance with approved data.

Question 14Philippine Civil Aviation Regulations and CAAP Requirements

Which of the following records must an approved maintenance organization retain for maintenance performed on Philippine-registered aircraft?

  1. Only records of work that resulted in defects
  2. Only financial records of the work performed
  3. Maintenance records showing work done, date, and certifying personnel Correct answer.
  4. Only the customer's invoice copy

Explanation

Maintenance organizations must keep records that identify the work performed, the date of completion, and the person certifying the work, so that continued airworthiness can be traced. These records support compliance and audit requirements.

Question 15Philippine Civil Aviation Regulations and CAAP Requirements

A Philippine-registered aircraft has been involved in an accident. Which body conducts the investigation under Philippine civil aviation law?

  1. The insurance underwriter
  2. The aircraft manufacturer
  3. The Civil Aviation Authority of the Philippines through the Aircraft Accident Investigation and Inquiry Board Correct answer.
  4. The Civil Aviation Authority of the Philippines

Explanation

Under Philippine law, aircraft accident investigations are conducted through the Aircraft Accident Investigation and Inquiry Board, which operates within or in coordination with the CAAP. The investigation aims to determine causes and prevent recurrence, not to assign blame.

Question 16Philippine Civil Aviation Regulations and CAAP Requirements

What is the purpose of a maintenance control manual required for commercial air transport operators?

  1. To describe pilot duty schedules
  2. To describe how the operator's aircraft will be maintained and controlled Correct answer.
  3. To list the airline's ticket prices
  4. To record passenger complaints

Explanation

The maintenance control manual describes the operator's maintenance organization, procedures, and control of maintenance to ensure continued airworthiness. It is a required document that the CAAP reviews as part of operator certification.

Question 17Philippine Civil Aviation Regulations and CAAP Requirements

Which of the following describes the minimum equipment list (MEL) concept as applied under Philippine regulations?

  1. A list of equipment that must always be inoperative before flight
  2. A list of optional equipment not required for airworthiness
  3. A list of spare parts carried on board
  4. An approved list that allows operation with specific equipment inoperative under defined conditions Correct answer.

Explanation

An MEL is approved for the operator and allows flight with particular items of equipment inoperative, subject to prescribed conditions and limitations. It is derived from the master minimum equipment list and must not be less restrictive than that baseline.

Question 18Philippine Civil Aviation Regulations and CAAP Requirements

Under PCAR Part 4, what nationality mark is displayed on Philippine-registered aircraft?

  1. PI
  2. PH
  3. PA
  4. RP Correct answer.

Explanation

Philippine-registered aircraft carry the nationality mark RP, followed by the registration mark assigned by the CAAP. The mark identifies the aircraft's state of registry in accordance with international practice.

Question 19Philippine Civil Aviation Regulations and CAAP Requirements

A maintenance specialist is asked to perform work for which they do not hold the appropriate rating. What is the correct course of action?

  1. Perform the work and sign it off anyway
  2. Perform the work without recording it
  3. Sign the work off after the pilot agrees
  4. Decline to certify the work and refer it to personnel with the appropriate rating Correct answer.

Explanation

A certificate holder may only exercise privileges within the ratings held; certifying work outside that scope violates the regulations. The correct action is to decline and refer the task to qualified personnel.

Question 20Philippine Civil Aviation Regulations and CAAP Requirements

Which document provides the approved standards for the design, construction, and performance of an aircraft type in the Philippines?

  1. The type certificate Correct answer.
  2. The operations manual
  3. The Certificate of Registration
  4. The maintenance control manual

Explanation

A type certificate approves the design of an aircraft type and defines the standards to which it is built. Individual aircraft then receive airworthiness certificates confirming conformity to that approved type design.

Question 21Philippine Civil Aviation Regulations and CAAP Requirements

How does the CAAP treat an aircraft that no longer meets applicable airworthiness requirements?

  1. It may continue operating until the next scheduled inspection
  2. It is transferred to the military registry
  3. Its airworthiness certificate may be suspended or revoked until deficiencies are corrected Correct answer.
  4. It is automatically exported

Explanation

When an aircraft fails to meet airworthiness requirements, the CAAP may suspend or revoke the airworthiness certificate, and the aircraft cannot legally fly until the deficiencies are corrected. Continued operation would be unlawful and unsafe.

Question 22Philippine Civil Aviation Regulations and CAAP Requirements

Which of the following best describes the CAAP requirement concerning the use of approved maintenance data when performing maintenance?

  1. Maintenance must be performed using approved or acceptable data current for the task Correct answer.
  2. Maintenance may be performed from memory if the task is familiar
  3. Any data found on the internet is acceptable
  4. Only the manufacturer's marketing brochures are required

Explanation

Maintenance must be carried out in accordance with approved or acceptable technical data that is current and applicable to the aircraft or component. Using unapproved data or relying on memory can result in non-compliant work.

Question 23Philippine Civil Aviation Regulations and CAAP Requirements

What is the significance of the CAAP's adoption of airworthiness directives issued by a foreign state of design?

  1. They become mandatory for affected Philippine-registered aircraft when adopted by the CAAP Correct answer.
  2. They apply only to newly manufactured aircraft
  3. They apply only to aircraft operated in the issuing country
  4. They are advisory and optional for Philippine operators

Explanation

The CAAP may adopt airworthiness directives from the state of design, making them mandatory for affected Philippine-registered aircraft. Once adopted, compliance is required within the specified timeframe.

Question 24Philippine Civil Aviation Regulations and CAAP Requirements

Which of the following is required for an aircraft to be eligible for Philippine registration?

  1. It must be based outside the Philippines
  2. It must be owned by a Philippine citizen or entity meeting nationality requirements, or otherwise eligible under PCAR Part 4 Correct answer.
  3. It must be manufactured in the Philippines
  4. It must be operated only for private purposes

Explanation

PCAR Part 4 sets out eligibility conditions for registration, which generally include ownership by Philippine citizens or qualifying entities, or other eligible arrangements. Manufacture location and intended use are not the governing criteria.

Question 25Philippine Civil Aviation Regulations and CAAP Requirements

An aircraft maintenance specialist observes a condition that could affect safety and is not covered by existing approved data. What should be done?

  1. Continue operating until the next scheduled check
  2. Adjust the aircraft's logbook to remove the finding
  3. Report the condition through the appropriate continuing airworthiness reporting process Correct answer.
  4. Ignore the condition if the aircraft is still flying

Explanation

Safety-related conditions and defects must be reported through the established continuing airworthiness reporting channels so they can be assessed and addressed. Concealing or deferring such findings undermines safety and violates reporting obligations.

Question 26Philippine Civil Aviation Regulations and CAAP Requirements

Under Philippine civil aviation regulations, which document issued by the CAAP authorizes an approved maintenance organization to perform specific maintenance activities?

  1. The organization's business permit from the local government
  2. The aircraft's certificate of registration
  3. The AMO certificate with associated ratings and limitations Correct answer.
  4. The individual mechanic's employment contract

Explanation

The AMO certificate, together with its ratings and limitations, defines the scope of maintenance an approved maintenance organization may perform. It is issued by the CAAP after the organization demonstrates compliance with the applicable PCAR requirements. A business permit or employment contract does not confer maintenance authority.

Question 27Philippine Civil Aviation Regulations and CAAP Requirements

A Philippine-registered aircraft is scheduled for its annual inspection. Which document must be consulted to determine the approved inspection program and the items to be checked?

  1. The airport's ground handling manual
  2. The aircraft's pilot operating handbook
  3. The CAAP-approved aircraft maintenance program or inspection schedule Correct answer.
  4. The manufacturer's sales brochure

Explanation

The approved maintenance program or inspection schedule specifies the intervals and tasks required to keep the aircraft airworthy. It is approved by the CAAP and forms the basis for scheduled inspections. The pilot operating handbook provides operating limitations, not the approved inspection program.

Question 28Philippine Civil Aviation Regulations and CAAP Requirements

An AMO completes a major repair on a Philippine-registered aircraft. Under PCAR Part 6, what must the organization do before the aircraft can be returned to service?

  1. Submit the repair data to the CAAP for approval and obtain a Form 337 or equivalent approval Correct answer.
  2. Record the repair in the aircraft logbook without further action
  3. Wait for the next scheduled annual inspection to document the repair
  4. Notify the aircraft owner by phone only

Explanation

Major repairs require approved data and formal approval by the CAAP before return to service. The organization must submit the repair data and obtain the appropriate approval, such as a Form 337 or equivalent. Simply logging the repair does not satisfy the approval requirement.

Question 29Philippine Civil Aviation Regulations and CAAP Requirements

A maintenance specialist is assigned to perform a task that requires specialized training and tooling not listed in the AMO's approved capabilities. What is the correct course of action under Philippine regulations?

  1. Proceed with the task using available tools and note the deviation in the logbook
  2. Perform the task and have a colleague sign off on the paperwork
  3. Complete the task and request retroactive approval from the CAAP
  4. Decline the task and inform the supervisor that the organization lacks the required approval and capability Correct answer.

Explanation

An AMO may only perform maintenance within the scope of its approved ratings and capabilities. Performing a task outside that scope, even with good intentions, violates the regulations. The correct action is to decline and escalate the issue so that proper arrangements can be made.

Question 30Philippine Civil Aviation Regulations and CAAP Requirements

During an audit, the CAAP finds that an AMO has been using unapproved maintenance data for a recurring inspection task. Which statement best describes the regulatory consequence under PCAR Part 6?

  1. The AMO may continue operations if the data is later approved
  2. The AMO must only issue a corrective action plan without further penalty
  3. The CAAP may suspend, revoke, or impose limitations on the AMO certificate Correct answer.
  4. The individual mechanic is solely responsible and the AMO faces no action

Explanation

Using unapproved data is a violation of the maintenance organization's approved procedures and the applicable regulations. The CAAP has the authority to take enforcement action, including suspension, revocation, or imposition of limitations on the AMO certificate. The organization bears responsibility for ensuring that only approved data is used.

Question 31Aircraft Weight and Balance

On an aircraft weight and balance report, the empty weight is defined as the weight of the aircraft in which configuration?

  1. Built, with all fixed equipment installed, but without usable fuel or crew Correct answer.
  2. Built, with unusable fuel drained and all optional equipment removed
  3. Loaded to maximum certificated takeoff weight but with no passengers
  4. Fully fueled with all usable fuel aboard and the crew at their stations

Explanation

Empty weight is the weight of the aircraft as built, including all fixed equipment, installed optional equipment, and trapped fluids, but excluding usable fuel, crew, passengers, and payload. It is the baseline from which all subsequent loading calculations begin.

Question 32Aircraft Weight and Balance

What is the datum on an aircraft weight and balance report?

  1. The longitudinal station of the main landing gear
  2. The point about which the aircraft is balanced in flight
  3. An arbitrary reference point from which arms and stations are measured Correct answer.
  4. The maximum aft center of gravity limit

Explanation

The datum is an arbitrarily chosen vertical reference plane from which all horizontal distances (arms) are measured. Its location is set by the manufacturer and may lie ahead of, behind, or within the aircraft. It is a measuring reference, not a balance point or a limit.

Question 33Aircraft Weight and Balance

An item weighs 120 pounds and is located at an arm of 40 inches from the datum. What moment does it contribute?

  1. 3 inch-pounds
  2. 1,200 inch-pounds
  3. 4,800 inch-pounds Correct answer.
  4. 160 inch-pounds

Explanation

Moment is the product of weight and arm, so 120 pounds multiplied by 40 inches equals 4,800 inch-pounds. Moments are summed to find the center of gravity by dividing total moment by total weight.

Question 34Aircraft Weight and Balance

Which condition describes the center of gravity of an aircraft?

  1. The station of the nose gear
  2. The average of the forward and aft CG limits
  3. The point at which the aircraft would balance if suspended Correct answer.
  4. The geometric center of the wing chord

Explanation

The center of gravity is the point through which the total weight of the aircraft acts, so the aircraft would balance if suspended there. Its location is found by dividing total moment by total weight.

Question 35Aircraft Weight and Balance

A mechanic records a tare weight of 45 pounds when weighing an aircraft on scales. How is tare handled in the weight and balance computation?

  1. Averaged across the three scales and added once
  2. Subtracted from each scale reading to obtain the true weight Correct answer.
  3. Ignored because tare is only relevant to fuel weighing
  4. Added to each scale reading before totaling

Explanation

Tare is the weight of chocks, blocks, or other items placed between the aircraft and the scale. It must be subtracted from the indicated reading so the true aircraft weight is used. Otherwise the empty weight will be overstated.

Question 36Aircraft Weight and Balance

When computing the loaded weight and balance of an aircraft, how are the moments of the items added to the aircraft handled?

  1. Only items located aft of the datum are counted
  2. They are subtracted from the empty weight moment
  3. They are averaged with the empty weight moment
  4. They are summed and added to the empty weight moment Correct answer.

Explanation

Each item's moment is computed as weight times arm, and all moments are summed with the empty weight moment. Dividing the total moment by total weight gives the loaded center of gravity.

Question 37Aircraft Weight and Balance

An aircraft has an empty weight of 1,200 pounds at an arm of 50 inches. A 200-pound pilot sits at an arm of 30 inches. What is the new center of gravity?

  1. 50.0 inches
  2. 40.0 inches
  3. 53.3 inches
  4. 46.7 inches Correct answer.

Explanation

Empty moment is 1,200 times 50, or 60,000 inch-pounds. The pilot adds 200 times 30, or 6,000 inch-pounds, for a total of 66,000 inch-pounds at 1,400 pounds. Dividing gives about 47.1 inches, so 46.7 is the closest listed value.

Question 38Aircraft Weight and Balance

A loaded aircraft weighs 2,500 pounds with a total moment of 225,000 inch-pounds. What is the center of gravity in inches from the datum?

  1. 900.0 inches
  2. 225.0 inches
  3. 90.0 inches Correct answer.
  4. 11.1 inches

Explanation

Center of gravity equals total moment divided by total weight, so 225,000 divided by 2,500 equals 90 inches. This value is then checked against the forward and aft CG limits.

Question 39Aircraft Weight and Balance

What does the maximum zero fuel weight limitation restrict?

  1. The weight of fuel that may be carried in the wings
  2. The weight of cargo loaded aft of the CG
  3. The total weight at the moment of touchdown
  4. The weight of the aircraft and its contents excluding usable fuel Correct answer.

Explanation

Maximum zero fuel weight limits the weight of the aircraft plus payload with no usable fuel aboard. It protects the wing structure, since fuel in the wings offsets bending loads. All weight above this limit must consist of fuel.

Question 40Aircraft Weight and Balance

Why can loading an aircraft beyond its aft center of gravity limit be hazardous?

  1. It increases elevator effectiveness and causes a nose-down pitch
  2. It reduces longitudinal stability and can cause difficulty recovering from a stall Correct answer.
  3. It reduces the load on the nose gear during taxi
  4. It increases the stalling speed by raising wing loading

Explanation

An aft CG shortens the distance between the CG and the tail, reducing the restoring moment that provides longitudinal stability. The aircraft becomes less stable and may be difficult to recover from a stall or spin.

Question 41Aircraft Weight and Balance

An aircraft is loaded such that its center of gravity falls forward of the forward CG limit. What is the primary operational concern?

  1. A tendency to oscillate in pitch at high speed
  2. Excessive tail-down force and nose gear overload
  3. Reduced longitudinal stability and tendency to spin
  4. Reduced elevator authority and increased stall speed Correct answer.

Explanation

A forward CG requires greater nose-up elevator force to raise the nose and increases the load on the tail, which raises the stall speed. In extreme cases there may be insufficient elevator authority for rotation or flare.

Question 42Aircraft Weight and Balance

A mechanic must convert a moment of 84,000 inch-pounds into pound-inches per 100. What value should be entered on the weight and balance form?

  1. 840 Correct answer.
  2. 8.4
  3. 84
  4. 8,400

Explanation

Dividing the moment by 100 gives 840, which is the value used when the form expresses moments in units of 100 inch-pounds. This convention keeps the numbers small and reduces arithmetic errors.

Question 43Aircraft Weight and Balance

During a reweigh, an aircraft's empty weight increases but its empty weight arm remains unchanged. What is the most likely explanation?

  1. New equipment was installed exactly at the existing CG Correct answer.
  2. The scales were not zeroed before weighing
  3. The datum was moved forward
  4. The aircraft was weighed with full fuel tanks

Explanation

Adding weight at a point located at the existing center of gravity changes the total weight without changing the moment arm, so the CG stays the same. Equipment installed at that station produces exactly this result.

Question 44Aircraft Weight and Balance

An aircraft has a maximum takeoff weight of 3,400 pounds and a maximum landing weight of 3,200 pounds. It departs at 3,350 pounds and burns 250 pounds of fuel in flight. What is true at landing?

  1. It lands exactly at maximum landing weight
  2. It lands 100 pounds below maximum landing weight Correct answer.
  3. It exceeds maximum takeoff weight
  4. It exceeds maximum landing weight by 150 pounds

Explanation

Subtracting 250 pounds of burned fuel from 3,350 pounds gives a landing weight of 3,100 pounds, which is 100 pounds below the 3,200-pound maximum landing weight. The takeoff weight was within its own limit.

Question 45Aircraft Weight and Balance

What is the effect of adding a given weight at a station farther aft of the datum compared with adding the same weight closer to the datum?

  1. The CG shifts forward because the moment arm is longer
  2. The CG shifts farther aft with the more distant station Correct answer.
  3. The CG shift is identical because the weight is the same
  4. The CG does not change if the weight is aft of the datum

Explanation

The CG shift depends on the moment added, which equals weight times arm. Adding the same weight at a greater arm produces a larger moment and therefore a larger aft shift of the center of gravity.

Question 46Aircraft Weight and Balance

A pilot adds 300 pounds of cargo at an arm of 120 inches to an aircraft whose current weight is 2,700 pounds at an arm of 80 inches. What is the new CG?

  1. 80.0 inches
  2. 88.0 inches
  3. 92.0 inches
  4. 84.0 inches Correct answer.

Explanation

Existing moment is 2,700 times 80, or 216,000 inch-pounds. The cargo adds 300 times 120, or 36,000 inch-pounds, giving 252,000 inch-pounds at 3,000 pounds, which is 84 inches.

Question 47Aircraft Weight and Balance

Why is unusable fuel included in the empty weight of an aircraft?

  1. Because it can be burned during a long flight
  2. Because it is counted as part of the useful load
  3. Because it is trapped in the system and cannot be used in flight Correct answer.
  4. Because it is required for engine start and taxi

Explanation

Unusable fuel remains trapped in lines, sumps, and low points and cannot be delivered to the engine in flight. Because it is always present, it is included in the empty weight rather than in the useful load.

Question 48Aircraft Weight and Balance

An aircraft's empty weight is 1,500 pounds at an arm of 60 inches. A 150-pound seat is removed from a station at 100 inches. What is the resulting center of gravity?

  1. 60.0 inches
  2. 55.6 inches Correct answer.
  3. 64.4 inches
  4. 66.7 inches

Explanation

Empty moment is 1,500 times 60, or 90,000 inch-pounds. Removing the seat subtracts 150 times 100, or 15,000 inch-pounds, leaving 75,000 inch-pounds at 1,350 pounds, which is about 55.6 inches.

Question 49Aircraft Weight and Balance

A mechanic weighs an aircraft on three scales and records readings of 800, 750, and 450 pounds, each including a 20-pound tare. What is the true empty weight?

  1. 2,000 pounds
  2. 1,960 pounds
  3. 1,880 pounds
  4. 1,940 pounds Correct answer.

Explanation

Total indicated weight is 2,000 pounds. Tare of 20 pounds applies to each of the three scales, so 60 pounds is subtracted, giving a true empty weight of 1,940 pounds.

Question 50Aircraft Weight and Balance

An aircraft is loaded within both its maximum weight and its CG limits, but the load includes significant weight in the aft baggage compartment. Which operational effect should the mechanic consider when advising the pilot?

  1. A decrease in longitudinal stability and a tendency toward pitch-up Correct answer.
  2. An increase in the stalling speed due to aft loading
  3. A need for greater nose-up elevator force during rotation
  4. Reduced tail load and increased nose-down trim requirement

Explanation

Aft loading moves the CG closer to the tail, reducing the restoring moment and thus longitudinal stability. The aircraft tends to pitch up and may be difficult to recover from a stall even though all limits are met.