# SDR YENA2023100901205

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 2023
- Submitted: October 9, 2023
- Operation: Air carrier
- Aircraft: [N949JT](https://openairdocs.org/aircraft/N949JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 06575
- Aircraft time: 31,765 hours, 10,249 cycles
- System (JASC): [2900 · Hydraulic Power System](https://openairdocs.org/jasc/2900)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2023100901205

## Discrepancy

FLT#861, BOS-SJU. (AIRCRAFT PERFORMED AN AIR TURN BACK TO BOS) 'BLUE HYDRAULIC SYSTEM QUANTITY INDICATES BELOW NORMAL FILLING LEVEL DURING FLIGHT; SERVICED HYD AT BLUE SYST. REF AMM 12-12-29. OPS CHECK OK.'

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.