# SDR 0000049926

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N926NW
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47425
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Connector
- Part number: P11157
- Condition: Broken
- Location: Downlock Sensor
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0000049926

## Discrepancy

NOSE LANDING GEAR UNSAFE LIGHT REMAINED ON AFTER GEAR RETRACTION.  CREW EXTENDED GEAR, DECLARED AN EMERGENCY, AND PERFORMED FLY-BY OF TOWER TO DETERMINE IF GEAR WAS DOWN AND LOCKED.  FLIGHT WAS RETURNED TO MEM AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND CANNON PLUG P1-1157 TO DOWN AND LOCK SENSOR BROKEN.  REPLACED PLUG.  BITE CHECK FAULTED DOWNLOCK SENSOR.  OPERATIONAL CHECK NORMAL.  AIRCRAFT RETURNED TO SERVICE.

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