# SDR AALA20180819001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2018
- Submitted: August 22, 2018
- Operation: Air carrier
- Aircraft: [N948AN](https://openairdocs.org/aircraft/N948AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30086
- Aircraft time: 54,031 hours, 22,011 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 887477
- Part serial: MX760833
- Condition: Defective
- Location: Hyd System
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20180819001

## Discrepancy

SYSTEM A HYDRAULIC QUANTITY INDICATION. EMERGENCY WAS DECLARED, AND LANDED WITHOUT FURTHER INCIDENT.  SYSTEM A EDP ILLUMINATED FOR DURATION OF FLIGHT,  GREATER THAN 5 MINUTES.  THE AIRCRAFT WAS GROUNDED.  REPLACED LEFT ENGINE HYDRAULIC PUMP IAW AMM 29-11-11.  REPLACED ALL PRESSURE, RETURN, ENGINE AND EMDP FILTER/CASE. REPLACED EMDP PER AMM 29-11-21. REPLACED PRESSURE AND RETURN HYDRAULIC LINES ON ENGINE. REPLACED CASE DRAIN LINE ON ENGINE IAW AMM 29-11-51. ACCOMPLISHED SYSTEM A HYDRAULIC FLUSH PER MCM 29-93-01.  HYDRAULICS SYSTEM SERVICED. ACCOMPLISHED ENGINE RUN IAW AMM 71-00-00. LEAK CHECK AND OPERATIONS CHECKED OK ON THE GROUND.

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