# SDR 96ZZZM1204

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N990Z
- Make and model: Doug DC-9-31
- Registry model: [Doug DC-9-31](https://openairdocs.org/model/douglas-dc-9-31) (OpenAirDocs)
- Aircraft serial: 47136
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Dnlock Switch
- Part number: H146
- Condition: Failed
- Location: Lt Mlg
- Stage of operation: CL
- Nature of condition: P
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZM1204

## Discrepancy

STL - DURING CLIMB, LEFT MAIN LANDING GEAR UNSAFE LIGHT REMAINED ON.  FLIGHT RETURNED TO STL.  REMOVED AND REPLACED DOWNLOCK SWITCH, MFG P/N H14-6.  OPERATIONAL CHECK NORMAL.

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