Aircraft Engine Starters

Monday, May 16, 2016 at 12:00 AM ET

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The Garmin Avionics Modernization Package includes the Garmin G600 TXi EFIS and GFC 600 autopilot. Columbia Avionics & Aircraft Services

Key Takeaways:

Aircraft starters are prone to various failures, including internal shorts, complete cessation of function, or failure to disengage, sometimes occurring after very few operating hours or starts.
These starter malfunctions can lead to serious safety hazards such as fire, electrical system overcharge causing battery failure and loss of power, or damage to surrounding components like wiring looms and instrumentation.
Incidents often involve visible signs like smoke, burning odors, hot components, or compromised electrical systems, indicating a need for robust protection and monitoring.

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Lancair LC-40-550FG
Shorted Starter

Installed a rebuilt starter adapter and overhauled starter. On starting, the prop turned about 10 degrees and stopped. Pilot then smelled a burning odor and could not shut off the battery. The cowling was removed but the battery box was too hot to touch. Using gloves, the battery was disconnected. The starter (p/n 6462382) had a short in its field coils. There is no protection between the starter and battery so the starter & battery solenoid/relay stuck closed, the battery could not be shut off with the battery switch. Overhauled starter failed after 44 starts. Very dangerous due to a fire hazard.