ANAC Flight Engineer Theoretical Exam (Mecânico de Voo) common mistakes
ANAC Flight Engineer Theoretical Exam (Mecânico de Voo) · Understand the traps and how to avoid them.
When a question gives takeoff or landing data, the candidate selects the performance figure from the table for the actual weight and conditions instead of first correcting for wind, slope, pressure altitude, and temperature, applying only one correction or applying corrections in the wrong order.
AFM/RFM charts are built as a chain (base distance, then additive or multiplicative corrections), and candidates who memorized a single worked example skip intermediate steps or mix up whether a correction is an additive increment or a percentage.
What to do instead
Before touching the chart, write the correction sequence in the AFM order on scratch paper (e.g., base distance at sea level ISA, then altitude, then temperature, then slope, then wind, then contamination), and perform each step as a separate written line so the examiner can see the chain; practice with five full chart exercises per study session until the sequence is automatic.
The candidate computes weight and balance with the zero-fuel weight and operating empty weight confused, or places the CG by dividing total moment by total weight using moments referenced to different datum arms in the same sum.
Multiple arm conventions (fuselage station, balance arm, %MAC) appear in the same manual, and candidates who work quickly grab the arm from the wrong table or forget to include crew, catering, and potable water in the operating empty weight.
What to do instead
Build a standard load sheet template with every item listed in the manual's order (OEW, crew, pantry, passengers by zone, cargo by hold, fuel), convert every arm to the same datum before summing, and always finish by checking the result against the published CG envelope and the %MAC conversion formula.
The candidate answers RBAC questions using memory of older Brazilian regulations (RBHA) or foreign rules (FAR/EASA) rather than the current RBAC text, especially for crew duty limits, MEL use, and documentation retention periods.
Many study guides and older instructors still teach RBHA-era numbers, and the RBAC numbering and content changed several times, so candidates recognize a familiar-sounding figure and stop reading the alternatives.
What to do instead
Study directly from the current RBAC issued by ANAC, annotate each figure with the RBAC number and amendment date, and when a question cites a regulation, recall the specific article rather than the general principle; build a one-page comparison sheet of the figures most often confused (duty period, rest, retention of records).
The candidate treats the MEL as a simple list of permitted defects and approves dispatch without verifying the operational (O) and maintenance (M) procedures, the placarding requirement, and whether the defect affects performance or the flight manual supplement.
The MEL is structured by ATA chapter with columns for item, number installed, number required for dispatch, and remarks, and candidates who only check the dispatch number column miss the conditions in the remarks column.
What to do instead
For every MEL exercise, read all columns aloud in order and state explicitly whether an (O) procedure, (M) procedure, or placard applies, then confirm the resulting configuration is compatible with the planned route and weather; practice with ten items spanning different ATA chapters.
The candidate misreads meteorological reports and forecasts, confusing TEMPO, BECMG, and FM groups, or treating a PROB30 as a certainty, and misreading METAR trend groups as current observed conditions.
The groups look similar on paper and the candidate learned them as vocabulary rather than as time-based change indicators, so the distinction between a temporary fluctuation and a permanent change is lost under exam time pressure.
What to do instead
Rewrite each METAR and TAF into plain language with explicit time boundaries (e.g., 'between 1400 and 1600, temporarily, 30% probability'), and drill the difference between a change group and a trend; do this for at least five TAFs per session until the time logic is automatic.
The candidate answers navigation questions by applying the wind correction and heading calculations in the wrong direction, or confuses true, magnetic, and compass headings without applying variation and deviation in the correct sequence.
The conversion chain (true to magnetic to compass, and back) has a fixed order and sign convention, and candidates who compute mentally lose track of whether variation is east or west.
What to do instead
Always draw the wind triangle and write the conversion chain with signs before calculating ('true virgins make dull company' style mnemonic is acceptable), and verify by working the problem backward from compass to true; practice ten problems per session with mixed east and west variation.
The candidate answers systems questions by describing what a component does in normal operation but cannot state the failure consequences, the alternate or backup mode, or which indications the crew would see.
Study material is often organized by normal system description, and candidates memorize flow paths without building the failure-mode map that the exam actually tests.
What to do instead
For each major system (hydraulics, electrical, fuel, pressurization, flight controls, powerplant), build a one-page diagram with normal operation, degraded modes, and the associated cockpit indications, and self-test by covering the failure column and reciting it.
The candidate selects a human factors or CRM answer based on what a conscientious pilot 'should' do rather than on the documented error chain, or attributes an accident to a single causal factor instead of the chain of latent conditions and active failures.
Candidates answer from personal experience and moral reasoning, and the exam expects the SHELL, Swiss cheese, or error-model framework with recognition of fatigue, communication breakdown, and authority gradient.
What to do instead
Learn the specific models named in the syllabus and, for each practice scenario, explicitly identify the active failure, the latent conditions, and the barrier that failed; write the answer using the model's vocabulary rather than personal opinion.
The candidate confuses ICAO Annex standards with recommended practices and national regulations, or cites an Annex number that does not match the subject (e.g., Annex 1 personnel licensing versus Annex 2 rules of the air).
The Annexes are numbered and their titles are similar, and candidates learn them as a list without linking each Annex to the operational question being asked.
What to do instead
Build a table of all ICAO Annexes with number, title, and one concrete operational example for each, and mark which items are standards versus recommended practices; review the table before each practice exam and test yourself by subject rather than by number.
The candidate answers instrument and avionics questions by describing the display symbology without knowing the underlying sensor source, the failure indication, or the reversionary mode when a sensor or display unit fails.
Modern glass cockpit questions test integration logic, and candidates who studied analog instruments transfer the old description to the new system and miss the reversion and comparison-monitoring logic.
What to do instead
For each major instrument or system (air data, AHRS/IRS, FMS, autopilot, EFIS), map the sensor inputs, the display outputs, the failure flags, and the reversionary path, and practice questions that ask what the crew sees after a specific sensor failure.