# SDR IPXA201805189494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2018
- Submitted: May 18, 2018
- Operation: Air carrier
- Aircraft: [N576UP](https://openairdocs.org/aircraft/N576UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35665
- Aircraft time: 37,441 hours, 5,637 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Uplock Sensor
- Condition: Broken
- Location: Rt Mlg
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA201805189494

## Discrepancy

DURING REPLACEMENT OF THE RT BODY GEAR ALT UPLOCK SENSOR. FOUND PRI SENSOR HEAD BROKEN.   TROUBLESHOT IAW FIM 32-61 TASK 898 & 878.  RIGHT BODY GEAR PRI SENSOR FAULT,  SWAPPED RT BODY GEAR PRI UPLOCK SENSOR FROM RT BODY GEAR ALT UPLOCK SENSOR S1637,  REPLACED THE RT BODY GEAR UPLOCK SENSOR & CMC PSEU TEST PASSED IAW AMM 32-61-11/201, AND AMM 32-09-03/501.

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