# SDR YENA2024080801099

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2024
- Submitted: August 8, 2024
- Operation: Air carrier
- Aircraft: [N991JT](https://openairdocs.org/aircraft/N991JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07994
- Aircraft time: 25,884 hours, 5,102 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic System
- Condition: Failed
- Location: Yellow
- Stage of operation: AP
- How discovered: V
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2024080801099

## Discrepancy

FLT#778, LAS-BOS. (AIRCRAFT DECLARED AN EMERGENCY INTO BOS) 'COMPLETE LOSS OF YELLOW HYDRAULIC RESERVOIR IN FLIGHT ; INSPECTED & SERVICED YELLOW HYD SYST IAW AMM 12--12-29. NO DEFECT FOUND ON RESERVOIR.'

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