# SDR 99ZZZX1453

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N27975
- Make and model: Piper PA-31-325
- Registry model: [Piper PA-31-325](https://openairdocs.org/model/piper-pa-31-325) (OpenAirDocs)
- Aircraft serial: 317912047
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Switch
- Part number: 487862
- Condition: Contaminated
- Location: Lt Mlg
- Part time: 6,539 hours
- Stage of operation: AP
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX1453

## Discrepancy

PILOT LOWERED LANDING GEAR. LEFT MLG DOWN INDICATOR LIGHT (GREEN) FAILED TO ILLUMINATE AND LANDING GEAR WARNING HORN ALERTED PILOT OF POSSIBLE UNSAFE LEFT MLG CONDITION. PILOT RE-CYCLED LANDING GEAR INCIDENT.  FURTHER INVESTIGATION INDICATED LEFT MLG MICROSWITCH, SPRING-LOADED PLUNGER STUCK BEFORE REACHING ITS FULLY EXTENDED POSITION.  REMEDY, CLEAN AND LUBE SPRING-LOADED PLUNGER.

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