Beech 58 Baron
Nose Gear Switch Out Of Adjustment
During landing approach, the nose gear light flickered. Pilot recycled gear and received three-green, gear-down-and-locked indication, landing without incident. Maintenance found the nose gear down-and-locked indicator switch out of adjustment. Adjusted switch. Performed multiple landing gear retractions without a failure.
Part total time: Unknown
Beechcraft B300 King Air
Intermittent Landing Gear Switch
Landing gear would not retract, followed by gear-in-transit annunciation and the landing gear circuit breaker tripping. Circuit breaker was reset and gear handle was placed in down position. Landing was uneventful. Replaced landing gear handle selector switch per manufacturer’s recommendation.
Part total time: 2505.0 hours
Cessna 172P Skyhawk
Stuck Landing Light Switch
Landing light switch was stuck in “on” position. Switch replaced. Suspect internal arcing and welding of contacts. The overheating caused by the arcing can cause the switch body to melt, but did not in this case. No signs of heat damage of external switch surface were found.
Part total time: 746.0 hours
Cessna 208B Grand Caravan
Stuck Landing Light Switch
During initial climb, the captain smelled burning rubber and saw smoke coming from the left circuit breaker panel. The aircraft landed safely. The left landing light switch could not be switched to the off position but no CB was popped. The switch (p/n MS25306222) was replaced with a serviceable unit and checked okay.
Part total time: Unknown
Cessna 402C Businessliner
Burned Nav Light Switch
When nav light switch actuated, smoke came out of switch. Inspection found the nav light switch burned. Maintenance repaired wiring in left wing tip and replaced nav light switch with no further defects noted.
Part total time: Unknown
Piper PA-31-350 Navajo Chieftain
Shorted Taxi Light Switch
Sparks and smoke observed coming from overhead panel. Emergency declared. Found taxi light switch shorted. Taxi and landing light switches replaced. No further issues.
Part total time: Unknown
Piper PA-31-350 Navajo Chieftain
Burned Cabin Heater System Switch
Upon landing, pilot noticed smoke in the cabin. Inspection determined the blower switch for the cabin heat system had a burned terminal. Replaced the defective switch and ring terminal.
Part total time: Unknown
