SACAA CPL(H) Aircraft Technical & General Practice Questions - SACAA Commercial Pilot Licence (Helicopter) Aircraft Technical & General Knowledge Examination Exam

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A helicopter equipped with a semi-rigid teetering rotor system experiences a low-G pushover maneuver. What critical structural phenomenon is likely to occur if cyclic control is applied abruptly?

Mast bumping due to severe flapping angle exceeding teetering hinge stops Ground resonance caused by blade out-of-phase displacement Thermal runaway of the main gearbox planetary gear stage Sprag clutch slippage inside the freewheeling unit

Correct Answer:

Mast bumping due to severe flapping angle exceeding teetering hinge stops

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