# SDR AALA20160723003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2016
- Submitted: July 25, 2016
- Operation: Air carrier
- Aircraft: [N975AN](https://openairdocs.org/aircraft/N975AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29549
- Aircraft time: 45,158 hours, 18,365 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Leaking
- Location: Hyd System
- Stage of operation: NR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20160723003

## Discrepancy

DURING CRUISE THE "A" SYSYTEM HYDRAULIC LOW PRESSURE WARNING ILLUMINATED.  EMERGENCY DECLARED. LANDING UNEVENTFUL.  AIRCRAFT GROUNDED.  MAINTENANCE FOUND THE "A" SYSTEM FLOW LIMITER TO BE LEAKING AT ITS O-RING.  REMOVED AND REPLACED THE O-RING AND ACCOMPLISHED LEAK CHECK. SYSTEM CHECKED NORMAL.

---
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.