Bahrain CAA Part-66 AME Exam flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Part-66 licence categories

A, B1, B2, B3, and C categories define the scope of certification privileges; B1 covers mechanical, B2 avionics, and C base maintenance certification.

Certificate of Release to Service

A CRS is issued by authorised certifying staff after maintenance, confirming the work was performed in accordance with approved data and the aircraft is airworthy.

Continuing airworthiness management

The approved CAMO ensures the aircraft remains airworthy by managing the maintenance programme, airworthiness directives, and life-limited parts tracking.

Airworthiness Directive compliance

ADs are mandatory; compliance must be recorded with the method, date, and reference, and the aircraft cannot fly until the AD is accomplished.

SHELL model

Software, Hardware, Environment, and Liveware interfaces; the central Liveware is the person, and mismatches at interfaces cause human error.

Dirty Dozen

Twelve common maintenance error precursors including complacency, fatigue, pressure, distraction, lack of knowledge, and norms; recognising them reduces error.

Closed-loop communication

The receiver repeats back the instruction to confirm understanding; used for verbal task instructions and shift handovers to prevent misunderstanding.

Circadian low

Periods of lowest alertness around 03:00–06:00 and 15:00–17:00 local time; fatigue-related errors increase during these windows.

Situational awareness levels

Three levels: perception of cues, comprehension of their meaning, and projection of future state; loss of SA often precedes incidents.

Primary flight controls

Ailerons control roll, elevators control pitch, and the rudder controls yaw; these are the three primary axes of aircraft control.

Cabin differential pressure

The difference between cabin and ambient pressure, limited by relief valves; typically around 8–9 psi maximum on transport aircraft.

Oleo strut servicing

Landing gear shock struts are serviced with nitrogen and hydraulic fluid to the specified extension; incorrect servicing affects landing loads.

Composite damage classification

Delamination, impact damage, and porosity are assessed by NDT methods such as tap testing and ultrasonics; repair limits are in the SRM.

Hydraulic system pressure

Typical transport aircraft hydraulic systems operate at about 3000 psi (207 bar); lines must be depressurised before opening.

Brayton cycle

The gas turbine thermodynamic cycle: compression, constant-pressure combustion, and expansion; higher compression ratio and turbine inlet temperature improve efficiency.

High-bypass turbofan

A turbofan in which most airflow passes through the bypass duct, improving propulsive efficiency and reducing noise compared with turbojets.

Engine start sequence

The starter rotates the HP compressor, ignition is selected, and fuel is introduced after reaching the required N2 percentage; parameters are monitored throughout.

Engine chip detector

A magnetic plug in the oil system that captures metallic particles; a warning requires inspection per the AMM before further flight.

Constant-speed propeller

A propeller whose blade pitch is varied by a governor to maintain selected RPM; includes feathering and reverse functions tested per the AMM.

AC power standard

Transport aircraft use 115 V AC at 400 Hz, generated by IDGs or the APU generator; a constant-speed drive maintains frequency.

Essential bus

A bus that remains powered by the battery through a static inverter or TRU when main AC power is lost, supplying critical equipment.

Bonding resistance

Low-resistance electrical bonds, typically below 2.5 milliohms for primary structure, protect against lightning and static discharge.

ESD precautions

Wrist straps, grounded mats, and anti-static bags protect LRUs and circuit cards from electrostatic discharge damage during handling.

BITE fault diagnosis

Built-in test equipment identifies faulty LRUs and fault paths; the AMM fault isolation charts guide confirmation before parts substitution.

Approved maintenance data

AMM, SRM, IPC, WDM, and CMM are approved data; any deviation requires an approved engineering disposition such as a repair scheme.

Torque wrench calibration

Torque wrenches must be within calibration validity; the specified torque is applied and recorded, and extensions altering lever arm require recalculation.

Lockwire safetying

Lockwire, cotter pins, or self-locking nuts secure fasteners per the AMM; wire must be twisted in the correct direction and terminate correctly.

NDT methods

Visual, dye penetrant, magnetic particle, eddy current, ultrasonic, and radiographic inspection; each has specific material applicability and certified personnel requirements.

FOD control

Tool control, area sweeps, and pre-close inspections of intakes, engine bays, and control cavities prevent foreign object damage.

Confined-space entry

Fuel tank entry requires gas-free certification, entry procedures, and rescue arrangements per the AMM before personnel enter the tank.

Maintenance records retention

Detailed maintenance records are typically retained 2 years, and life-limited parts and major repairs for the aircraft's airworthiness life.

Type rating endorsement

A type rating is endorsed on the licence after experience and examination; certification of that type requires the endorsement and company authorisation.