# SDR YENA2026040600377

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2026
- Submitted: April 8, 2026
- 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: 8,796 hours, 1,369 cycles
- System (JASC): [2920 · Hydraulic System, Auxiliary](https://openairdocs.org/jasc/2920)
- Part: Ram Air Turb
- Condition: Faulted
- Location: Zone 400
- 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/YENA2026040600377

## Discrepancy

FLT# 1621, LHR-BOS. (ETOPS)  HYD RAT FAULT ON ENG 1 SHUTDOWN; REMOVED AND REPLACED RAT PRESSURE SWITCH PER AMM 29-22-53 & PERFORMED DEPLOYMENT & RETRACTION PF THE RAT PER AMM 29-22-00 OPS CK NORMAL NO LEAKS NOTED A/C OK FOR SVC.

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