GCAA AME Licence Exam common mistakes
GCAA AME Licence Exam · Understand the traps and how to avoid them.
Mixing up which regulation or authority an item belongs to - attributing ICAO Annex content to national law, or citing a GCAA CAR requirement for something that is actually an ICAO Standard, or vice versa.
Candidates memorise regulation numbers and Annex titles as isolated facts without building a hierarchy (ICAO Standards and Recommended Practices → national civil aviation law → GCAA regulations and technical guidance). Under exam pressure the labels blur because the mental model is a flat list rather than a layered structure.
What to do instead
Draw and redraw the hierarchy until it is automatic: ICAO Annexes as the international baseline, national law as the enabling statute, GCAA CARs as the binding operational rules, and guidance material as non-binding. For each practice question, explicitly state which layer the answer sits in before choosing the option.
Confusing an airworthiness directive with a service bulletin and getting the mandatory-versus-advisory status backwards, or treating an AD as applicable only to the operator that requested it.
Both documents arrive as maintenance instructions and often address the same component. Candidates learn them as 'paperwork types' rather than by their legal origin - ADs issued by the authority under regulation, service bulletins issued by the manufacturer voluntarily.
What to do instead
Anchor each on two questions: who issues it, and is it legally binding? AD = authority-issued, mandatory, compliance is a legal requirement. SB = manufacturer-issued, advisory unless made mandatory by an AD or by the operator's approved maintenance programme. Practise classifying a dozen scenarios by those two questions.
Reading an electrical diagram or wiring schematic and assuming current flows from the battery positive terminal through the load in the drawn left-to-right order, rather than tracing the actual circuit path through switches, relays and grounds.
Candidates transfer a habit from block diagrams, where flow follows the page, to schematics where physical layout governs. They also under-weight the return path through structure or ground, so they miss open-ground faults and relay coil versus contact confusion.
What to do instead
Trace every circuit aloud in the order: source positive → protection → control device → load → return to source. Redraw each practice circuit in that canonical order before answering, and separately verify the relay coil circuit versus the contact circuit in any question involving relays.
Applying a memorised formula without checking unit consistency - mixing millimetres and metres, kiloohms and ohms, or degrees and radians - and reporting an answer that is dimensionally plausible but numerically wrong.
Exam questions deliberately use mixed prefixes and units to test conversion discipline. Candidates under time pressure skip the conversion step because the arithmetic 'looks easy', and there is no habit of sanity-checking the magnitude of the result.
What to do instead
Adopt a fixed routine for every calculation: write the given values with their units, convert all to SI base units in a written intermediate line, compute, then convert back and sanity-check the magnitude against physical intuition. Never do conversion in your head.
Treating human factors as a list of named concepts (complacency, fatigue, pressure) and selecting the concept name rather than analysing the specific behaviour described in the scenario.
Human factors content is often revised as vocabulary rather than as an application model. Scenario questions describe a chain of events - a shift handover, a missing tag, a supervisor present - and the correct answer depends on which link failed, not on which buzzword appears.
What to do instead
For each scenario, identify the specific failure point in the maintenance error chain (task, individual, team, organisation) before looking at the options. Practise writing one sentence naming the failed barrier, then match that sentence to the option that describes the same barrier.
Assuming that a component which passes a functional or operational check is therefore airworthy, ignoring the required inspection, dimensional check or documentation step that the check does not cover.
Candidates conflate 'it works' with 'it complies'. Operational checks are vivid and easy to remember; the associated inspection requirements, torque checks, and certification entries are less memorable and get skipped.
What to do instead
For each system, memorise the maintenance action as a bundle: what is checked, by what method, against what limit, and what certification entry follows. When a question offers 'functional check satisfactory' as an answer, ask what the question stem actually required to be verified.
Misidentifying the primary load path or the fail-safe/fail-soft classification of a structural member, and therefore choosing the wrong inspection emphasis or the wrong consequence of a crack.
Structures are studied as labelled diagrams rather than as load paths. Candidates memorise component names without understanding which member carries limit load after a failure, so questions about inspection intervals or damage tolerance find no mental hook.
What to do instead
For each major structural element, state in one sentence what load it carries, what it carries if it fails, and therefore whether it is a primary, secondary or fail-safe element. Redraw load paths from wing to fuselage attachment by hand until the sequence is automatic.
Confusing turbine and piston engine parameters - applying turbine concepts such as EGT as a thrust-setting parameter, or piston concepts such as mixture ratio, to the wrong engine type - and misreading which parameter indicates which fault.
The two engine types are often revised in separate blocks and then blended under exam pressure. Candidates also learn parameters by name without linking each to the physical process it measures.
What to do instead
Build a two-column comparison table for each parameter (EGT, EPR, N1, N2, manifold pressure, RPM, fuel flow): what it physically measures, what it indicates in a turbine, what it indicates in a piston engine, and what a rising or falling trend means. Revise the table, not the prose.
Selecting the corrosion treatment or hardware substitution that 'seems reasonable' rather than the one permitted by the approved data, such as using a non-equivalent fastener or an unspecified protective coating.
Candidates reason from general engineering intuition rather than from the principle that maintenance must be performed to approved data. Questions are constructed so that the intuitive answer is the non-compliant one.
What to do instead
Before answering any hardware or corrosion question, ask: is this action supported by approved data, and is this part an approved equivalent? If the stem does not establish that, the option that changes the design or specification is wrong regardless of how sensible it sounds.
Running out of time because early questions are over-analysed, and then answering later questions from first impressions without reading the full stem - particularly on multi-part scenario questions.
Candidates lack a time budget and treat every question as equally weighted. Anxiety about a hard early question consumes the reserve needed for the scenario questions later in the paper, which carry the same mark but need more reading.
What to do instead
Set a per-question time allowance from the total paper time and question count before starting. Mark and move on after the allowance is spent on any question, return only after all questions are attempted, and always read the full stem and all options before selecting on the second pass.