Lesson 1Turboprop engine types: turboprop core, free-turbine vs fixed-shaft, common modelsCovers turboprop core layout, compressor, combustor, and turbine sections. Compares free-turbine and fixed-shaft designs, discussing starting, control, and failure modes. Reviews common King Air and ATR engine models and maintenance impacts.
Gas generator core components and flow pathFree‑turbine versus fixed‑shaft comparisonPower turbine and reduction gearbox functionTypical King Air engine models and ratingsTypical ATR engine models and ratingsLesson 2Typical twin-turboprop models and selection rationaleReviews representative King Air and ATR twin-turboprop models, their roles, and performance. Explains why operators select them, highlighting payload, range, field performance, reliability, and maintenance implications for mechanics.
King Air family roles and configurationsATR family roles and configurationsPerformance and payload trade‑offsField length and runway environment limitsMaintenance cost and reliability factorsLesson 3Propeller systems: constant speed, governor operation, feathering, synchronizationDetails constant-speed propeller operation, governor components, and blade pitch control. Explains feathering, unfeathering, and synchronization systems, emphasising rigging, leak checks, and common failure modes affecting safety.
Constant‑speed propeller operating modesPropeller governor components and flow pathsFeathering and unfeathering mechanismsOverspeed protection and beta rangePropeller synchronization and synchrophasingLesson 4Landing gear types: cantilever, oleo struts, bogie/truck designs, retraction mechanismsDescribes landing gear layouts used on King Air and ATR aircraft, including main and nose gear. Explains oleo strut operation, bogie trucks, steering, and retraction systems, with focus on inspection, servicing, and rigging checks.
Nose and main gear arrangement overviewOleo strut construction and servicingBogie and truck assemblies on ATR gearRetraction actuators, locks, and uplatchesSteering systems and shimmy dampersLesson 5Maintenance documentation used for this platform: AMM, CMM, IPC, wiring diagrams, SBs, ADs, logbooksOutlines key maintenance documents for King Air and ATR fleets, including AMM, CMM, IPC, wiring diagrams, SBs, ADs, and logbooks. Shows how mechanics use them for troubleshooting, parts selection, and compliant recordkeeping.
Aircraft Maintenance Manual (AMM) usageComponent Maintenance Manual (CMM) scopeIllustrated Parts Catalog (IPC) for partsService Bulletins and Airworthiness DirectivesLogbook entries and electronic recordsLesson 6Common instrumentation: ITT, torque, N1/Np, oil pressure and temperature sensorsExplains primary engine and propeller instruments: ITT, torque, N1, Np, and oil parameters. Covers sensor types, signal conditioning, and cockpit displays, plus typical failure indications and troubleshooting considerations for mechanics.
Interpreting ITT and temperature limitationsTorque sensing and indication systemsN1 and Np speed measurement methodsOil pressure and temperature monitoringDisplay units and wiring fault symptomsLesson 7Airframe structure: wing, fuselage load paths, control surfaces and hingesExplores primary load paths from wing to fuselage, including spars, frames, and stringers. Details control surfaces, hinges, and actuators, emphasising inspection points, corrosion risks, damage limits, and typical repair considerations.
Wing spars, ribs, and skin load sharingFuselage frames, stringers, and pressure shellEmpennage structure and attachment fittingsPrimary control surfaces and hinge designControl surface actuators and linkagesLesson 8Safety, human factors, and regulatory basics for maintenance actionsIntroduces regulatory framework, including FAA and EASA basics, and how they shape maintenance practices. Highlights human factors, error traps, communication, and shift turnover, linking them to safety culture and incident prevention.
Regulatory roles of FAA, EASA, and authoritiesMaintenance certification and sign‑off basicsHuman factors and common error mechanismsCrew coordination and shift handover risksSafety culture, reporting, and just culture
