# SDR YADA20151130001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2015
- Submitted: December 1, 2015
- Operation: Air carrier
- Aircraft: [N113AX](https://openairdocs.org/aircraft/N113AX), registered now
- Make and model: Beech 1900C
- Registry model: [Beech 1900C](https://openairdocs.org/model/beech-1900c) (OpenAirDocs)
- Aircraft serial: UC41
- Aircraft time: 71,666 hours, 68,584 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Uplock Switch
- Part number: 1003810064
- Condition: Shorted
- Location: Nlg
- Part time: 2,019 hours, 1,656 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YADA20151130001

## Discrepancy

LANDING GEAR UNSAFE INDICATION, AFTER RETRACTION, RED LIGHT IN HANDLE.  ACFT LANDED UNEVENTFULLY AT AIRPORT OF ORIGIN.  IDENTIFIED & REPLACED A FAULTY NOSE GEAR UPLOCK INDICATION SWITCH, SWITCH WAS FOUND TO HAVE CONTAMINATION & CORROSION ON TERMINAL CONTACTS UNDER SEALANT ON END OF SWITCH CAUSING SHORTING BETWEEN TERMINALS & CASE.  THIS IS A COMMON FINDING FOR FAILURES OF THIS PN.  SWITCH FOR THIS OPERATOR.

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