# SDR YENA2025021800168

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2025
- Submitted: February 18, 2025
- Operation: Air carrier
- Aircraft: [N992JB](https://openairdocs.org/aircraft/N992JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 08178
- Aircraft time: 28,491 hours, 5,638 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Uplock
- Part number: C247300019
- Part serial: 10137C24730
- Condition: Failed
- Location: 2530gm
- Part time: 28,491 hours, 5,638 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2025021800168

## Discrepancy

FLT#947, JFK-BZN. (AIRCRAFT PERFORMED AN AIR TURN BACK) LG NOSE WOULD NOT CLOSE OR UPLOCK; NLG UPLOCK VERIFIED OPEN AND WOULD NOT LOCK. REMOVED AND REPLACED NLG UPLOCK (2530GM) IAW AMM 32-31-21. LEAK CHECK AND OPS CHECK GOOD. A/C OK FOR CONTINUED SVC.OPS CHECK INCLUDE GEAR SWINGS.

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