# SDR CALA2023042401238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2023
- Submitted: April 24, 2023
- Operation: Air carrier
- Aircraft: [N451UA](https://openairdocs.org/aircraft/N451UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 865
- Aircraft time: 75,094 hours, 30,705 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Uplock
- Part number: C247301003
- Part serial: FEM1802
- Condition: Failed
- Location: Zone 700
- Part time: 768,576 hours, 728,160 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/CALA2023042401238

## Discrepancy

LGCIU 2 FAULT DISPLAYED ON UPPER ECAM SCREEN - L-G REPLACED PROX SENSOR 28GA PER AMM 32- 31-73-000-001-A AND OPS CHECK PER 32-31-73-400-001-A ON R/H MAIN GEAR OPS CHECK SYSTEM OK NO FAULTS FOUND.  REPLACED NLG UPLOCK IAW AMM 32-31-14-400-001 OPS CHECK OK PER AMM 32-31-00-710-002-A  PER EC/RA 3231-01243.

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