Helicopter Aerodynamics, Structures & Systems

Collective/cyclic control, dissymmetry of lift and flapping, precession, translational lift, ground effect and autorotation.

The swashplate, collective/cyclic/pedal control, hydraulic servos, mixing and stability augmentation.

Tracking and the tip-path plane, static/dynamic balancing, and vibration analysis by frequency (main/tail/drive).

The main gearbox and rotor-load path, the freewheel unit and autorotation, tail-rotor drive and the rotor brake.

The transmission-deck load path, rotor head and blades, vibration isolation and life-limited components.

Heating and ventilation of the (unpressurised) cabin, bleed-air/combustion heaters and vapour-cycle cooling.

Pitot-static and gyro/AHRS instruments, the dual tachometer and needle split, torque and low-rotor-RPM warning.

Gearbox-driven generation, DC/AC distribution, protection and the battery/essential bus.

Crashworthy seats, emergency and over-water equipment, the ELT and cargo hoist/hook.

Fire and overheat detection, extinguishing systems and the shut-down/isolate-before-discharge logic.

Crash-resistant (self-sealing) tanks and breakaway couplings, boost pumps and crossfeed, and capacitance quantity.

Gearbox-driven pumps, dual independent systems for the irreversible control servos, accumulators and filtration.

Electrical rotor-blade de-icing via slip rings, intake protection, probe/windshield heating and the shedding hazard.

Skid and wheeled gear, oleo struts, and ground resonance and its prevention (lead-lag dampers, oleo/tyre servicing).

External/internal lighting and anti-collision lighting, plus bleed-air/vacuum services and leak detection.

Integrated modular avionics, on-board maintenance systems with HUMS, and information systems.

Timed EASA-style Category B1 (helicopter) paper across all sixteen topic areas — 128 questions in 160 minutes, 75% to pass.