Part-66 Module 6 study plan

Classify aircraft electrical wire by insulation type, temperature rating and current-carrying capability, and state where each is used.

Compare crimped, soldered and welded terminations and list the acceptance and rejection criteria for each.

Explain connector shell, insert, keying and contact-retention features and how they prevent mismating.

Describe shielding, bonding and grounding requirements for cable runs, and calculate allowable voltage drop for a given run length.

Diagnose typical in-service cable and connector faults: chafing, arc tracking, cold solder joint, over-crimped barrel, contact back-out.

Distinguish mild steel, low-alloy steel and the stainless families by composition and typical aircraft application.

Explain annealing, normalising, hardening and tempering, and predict the effect of each on strength, hardness and ductility.

Interpret a steel specification callout and state the heat-treatment condition it implies and its handling constraints.

Identify nitriding, carburising and induction hardening, and select the appropriate one for a stated wear or fatigue requirement.

Describe inspection methods for heat-treatment defects and the hydrogen-embrittlement risk introduced by plating.

Classify corrosion findings as galvanic, pitting, intergranular, exfoliation, crevice, stress-corrosion, fretting or filiform.

Predict which member of a dissimilar-metal couple becomes the anode, and select a mitigation that is valid for that couple and location.

Explain the electrochemical cell, naming the roles of electrolyte, potential difference and anode-to-cathode area ratio.

Locate the highest-risk inspection zones on an airframe and choose a detection method suited to each corrosion type.

Apply protective schemes in the correct sequence: surface conversion, primer, topcoat, sealant, sacrificial or barrier protection.

Sort aluminium alloys into heat-treatable and non-heat-treatable series and state a typical use for each.

Explain the Alclad concept and its effect on corrosion resistance, strength and repairability.

Relate solution treatment, quenching, natural ageing and artificial ageing to the resulting mechanical properties.

Compare magnesium, titanium, copper and nickel alloys for aircraft use, including handling and machining hazards.

Decode temper designations and explain what each suffix tells the technician about condition.

Identify reinforcement and fibre types and match each resin system to its service temperature and handling requirement.

Describe wet lay-up, prepreg and autoclave curing, and name the defects each process is prone to.

Differentiate laminate defects: void, delamination, disbond, fibre breakage, porosity and wrinkle.

Select an inspection technique (tap test, ultrasonic, radiography, visual) for a stated defect and state its limitations.

Describe the handling and installation constraints of transparencies, sealants and adhesives used on non-metallic structures.

Identify thread forms, thread series and fit classes, and determine the correct grip length and grip range for a joint.

Select the correct fastener and locking device for a stated joint, access condition and vibration environment.

Describe installation and removal procedures for solid rivets, blind fasteners and proprietary structural fasteners.

Explain torque, preload and the effect of lubrication on applied torque, and compute a worked preload example.

Recognise failure modes: thread stripping, galling, hydrogen embrittlement and fatigue cracking from poorly prepared holes.

Differentiate rigid and flexible fluid lines, and identify fittings, unions, flares and their pressure and temperature limits.

Describe correct tube fabrication: bend radius limits, flaring, annealing before forming and B-nut torque practice.

Classify springs by type and explain rate, preload, set, and the effects of temperature and fatigue.

Classify bearings by load direction and describe inspection for brinelling, false brinelling, fretting and lubrication failure.

Describe gear types, ratio calculation, backlash and the inspection points for belt, chain and shaft drives.

Describe control-cable construction, swaged and spliced terminations, and the inspection technique for each.

State rejection criteria for broken wires, wear, corrosion, kinks, and pulley and fairlead deterioration.

Explain rigging, cable tension measurement and temperature compensation during rigging checks.

Re-attempt every previously missed question across all nine domains and close each identified gap.

Sit a full-length timed mock across all domains and analyse the result by domain.