# SDR AALA201610139005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2016
- Submitted: October 14, 2016
- Operation: Air carrier
- Aircraft: [N171US](https://openairdocs.org/aircraft/N171US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1465
- Aircraft time: 53,552 hours, 19,979 cycles
- System (JASC): [2923 · Hydraulic Pump, Auxiliary](https://openairdocs.org/jasc/2923)
- Part: Ptu
- Part number: 971600
- Part serial: MX594075
- Condition: Faulty
- Location: Hydraulic Sys
- Part time: 44,603 hours, 25,575 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201610139005

## Discrepancy

GREEN SYSTEM RSVR OVHT MESSAGE ON CLIMB OUT.  APPLIED QRH PROCEDURE, FLIGHT DECLARED AN EMERGENCY AND RETURNED TO BOS WITHOUT FURTHER INCIDENT.  REPLACED PTU PER AMM 29-23-41.  OPS AND LEAK CHK GOOD.  THE AIRCRAFT WAS GROUNDED.

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