# SDR YENA2025060600566

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2025
- Submitted: June 6, 2025
- Operation: Air carrier
- Aircraft: [N4077J](https://openairdocs.org/aircraft/N4077J), 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: 11604
- Aircraft time: 5,894 hours, 914 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Warning Message
- Condition: False Indication
- Location: A/C Generator
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2025060600566

## Discrepancy

FLT#20, LHR-JFK. (ETOPS), CLASS II AC GEN MSG ( CLASS II MX MSG - GPCU OR AC GEN ); NO CLASS II MSG'S PRESENT ON ECAM. PERFORMED OPS CHECKS OF GPCU IAW AMM 24-40-00. OPS CHECK NORMAL. THIS CLR'S MDDR # 584587 MX4 UPDATED PLACARD RMVD

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