# SDR YENA2025082800894

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 25, 2025
- Submitted: August 28, 2025
- Operation: Air carrier
- Aircraft: [N4076J](https://openairdocs.org/aircraft/N4076J), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11513
- Aircraft time: 7,931 hours, 1,180 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Control Valve
- Part number: 32914322
- Part serial: 5792
- Condition: Failed
- Location: Apu
- Part time: 6,723 hours, 5,408 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2025082800894

## Discrepancy

FLT#33, BOS-CDG. (ETOPS)  APU MAINTENANCE MESSAGE ( CLASS II MAINTENANCE MESSAGES DISPLAYED ); PERFORMED REMOVAL AND REPLACEMENT OF APU LOAD CONTROL VALVE PER AMM 49-51-51. OPS CHECK GOOD NO FAULTS APPEAR ON ECAM, NO LEAKS NOTED. AIRCRAFT SYSTEM RESPONDS NORMAL.

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