# SDR ASAA2014070308458

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2014
- Submitted: July 8, 2014
- Operation: Air carrier
- Aircraft: [N548AS](https://openairdocs.org/aircraft/N548AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 30020
- Aircraft time: 34,609 hours, 11,092 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 66087
- Part serial: 660872772
- Condition: Failed
- Location: Hyd System
- Part time: 32,929 hours, 10,512 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/ASAA2014070308458

## Discrepancy

SYSTEM A ENGINE DRIVEN PUMP LOW PRESSURE LIGHT CLIMBING THROUGH 30,000 FT.  
ACCOMPLISHED QFR PROCEDURE.  CREW DECLARED EMERGENCY AS HYD QTY CONTINUED TO DROP.  RETURNED TO DEPARTURE.  ACFT GROUNDED.  REMOVED A SYSTEM ENGINE DRIVEN PUMP REF AMM 29-11-000-801-001, REMOVED ENG DRIVEN PUMP CASE DRAIN FILTER ELEMENT, NO CONTAMINATION NOTED, INSTALLED FILTER ELEMENT REF AMM 29-11-51, INSTALLED A SYS ENGINE DRIVEN PUMP REF AMM 29-11-11-400-801-001, OPS CHECK AND LEAK CHECK GOOD.

---
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.