Aircraft Systems

Throttle Cable Disconnect & Governor Failure

FAA Ref: FAA-S-ACS-6C Area IX Task C (Systems and Equipment Malfunctions)

Scenario & Physics Summary

Handling a failed throttle linkage stuck at high RPM vs idle during cruise and landing approach.

Interactive 3D Visual Plates & Scenario Media

Throttle Cable Disconnect & Governor Failure Plate 1

Plate 1: Throttle Cable Disconnect & Governor Failure

Throttle Cable Disconnect & Governor Failure Plate 2

Plate 2: Throttle Cable Disconnect & Governor Failure

Throttle Cable Disconnect & Governor Failure Plate 3

Plate 3: Throttle Cable Disconnect & Governor Failure

Throttle Cable Disconnect & Governor Failure Plate 4

Plate 4: Throttle Cable Disconnect & Governor Failure

Aerodynamic & Operational Physics

Carburetor throttle arms are spring-loaded to OPEN (high power) or IDLE depending on design.
If stuck at HIGH POWER: Use mixture control to modulate power, fly to long runway, cut mixture on short final.
If stuck at IDLE: Execute forced landing gliding approach to suitable field.

FAA Exam Gotcha Alert

Exam Trap: If throttle fails wide open, do NOT immediately shut down engine at altitude. Use mixture leaning to maintain level flight to an airfield.

Frequently Asked Questions & Exam Explanations

How can you control engine power if the throttle cable snaps in the open position?

Use the mixture control to carefully lean or rich the engine to adjust thrust and altitude.

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