# SDR ASMF200412009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2004
- Submitted: December 27, 2004
- Operation: Air carrier
- Aircraft: [N804AM](https://openairdocs.org/aircraft/N804AM), registered now
- Make and model: Boeing 757-2Q8
- Registry model: [Boeing 757-2Q8](https://openairdocs.org/model/boeing-757-2q8) (OpenAirDocs)
- Aircraft serial: 26271
- Aircraft time: 34,101 hours, 13,557 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 622532
- Part serial: MX518810
- Condition: Damaged
- Location: Hyd System
- Part time: 4,591 hours, 1,646 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF200412009

## Discrepancy

CAPT REPORTED LT HYD SYSTEM LOST, LT HYD QTY AT EICAS FAULT CODE 291106-01, LT HYD ELECTRIC PUMP FAULT CODE 291133-01, PTU FAULT CODE 292201-00 AND RT ELECTRIC PUMP OVERHEAT AT EICAS FAULT CODE 291113-02; THEREFORE LANDING GEAR WAS OPERATED IN ALTERNATE MODE. WHEN A/C WAS IN RUNWAY, IT WAS TOWED TO PLATFORM BY TOWING TRUCK DUE TO THE STEERING WAS OUT OF SERVICE. DURING MX REVISION, A LEAK WAS DETECTED ON LANDING ACTUATION HYD LINE AND THE HYD TANK WAS EMPTY.  THE HYD LINE WAS REPLACED IAW MM 32-00-00, TESTED CORRECT.  DURING OVERNIGHT SERVICE, LOW LT HYD QTY AND HYD LEAK ON PTU WERE DETECTED.  PTU WAS REPLACED IAW MM 29-22-01, TESTED CORRECT.

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