# SDR 9JLA201506248079

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2015
- Submitted: June 24, 2015
- Operation: Air carrier
- Aircraft: N940JM
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK492
- Aircraft time: 3,094 hours, 2,801 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Uplock Switch
- Part number: MS243311
- Condition: Intermittent
- Location: Nlg
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA201506248079

## Discrepancy

ON SEVERAL OCCASIONS THE CREW HAD REPORTED AN INTERMITTENT , LG UNLOCK ANNUNCIATOR, ILLUMINATING IN FLIGHT.  TROUBLESHOOTING DETERMINED THAT THE NLG UPLOCK & DOWNLOCK WERE DEFECTIVE.  THE SWITCHES WERE REPLACED WITH NEW PN MS24331-1 & RIGGED IAW THE AMM 32-20-00 & 32-30-00.  OPERATIONS CHECKED OK.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.