Cessna 182T Skylane
Broken Ignition Switch
Ignition switch (p/n C2925010106) could be rotated counter-clockwise past the “off” position and engage the starter.
Accident Probes
Critical Moments
Features
Learning Experiences
Proficiency
Reality Check
Squawk Box
Systems Check
Training and Proficiency
Ignition Switch Issues
The student pilot was doing an engine run prior to flight. Was unable on the first try to complete the magneto check as the key would not turn from the both position to the left/right/off position. After shutdown, the student was able to select off on the switch. The switch that was installed (p/n 103572101) included a push-to-start function. Found the switch sticking internally and replaced it with a new push-to-start switch.
Key Takeaways:
- A range of ignition switch failures were reported across multiple aircraft types, including mechanical issues like keys sticking, switches requiring excessive force, or rotating past intended positions.
- Electrical malfunctions were also noted, such as intermittent internal grounding and smoke from burned components within the switch.
- Several incidents specifically involved "push-to-start" ignition switches, which failed to turn or operate correctly during pre-flight checks or engine startup.
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