# SDR UIEA2014120800642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2014
- Submitted: December 8, 2014
- Operation: Air carrier
- Aircraft: [N412MC](https://openairdocs.org/aircraft/N412MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 30559
- Aircraft time: 62,513 hours, 9,641 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Uplock Sensor
- Part number: 834802
- Condition: Malfunctioned
- Location: Landing Gear
- 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/UIEA2014120800642

## Discrepancy

GEAR DISAGREE CAUTION EICAS MSG DURING GEAR RETRACTION WITH EXPANDED GEAR INDICATION SHOWING LT WING GEAR IN TRANSIT.  RAN QRH PROCEDURES, CONDITIONS REMAIN.  R & R PRIMARY UPLOCK SENSOR & ALTERNATE UPLOCK SENSOR & PERFORMED ADJUSTMENT TEST. OPERATES NORMAL IAW MM 32-61-21 COMPLETED WITH ACTION PLAN 10483.  PSEU REPLACED AS PRECAUTION & OPERATES OK.  REF LP 593142.

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