SDR 9608709758

Service difficulty report · Hyd Pump · Doug DC941

Difficulty date: April 18, 1996
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N758NW
Make and model: Doug DC941
Aircraft serial: 47286
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Hyd Pump
Part number: AS66411LS666
Condition: Fail
Location: Lt Enigne
Part time: 34,551 hours
Stage of operation: CL
Nature of condition: J
Precautionary procedure: A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING CLIMB, THE LEFT HYDRAULIC SYSTEM LOST HYDRAULIC PRESSURE. LEFT HYDRAULIC SYSTEM PRESSURE WAS RESTORED WITH ALTERNATE HYDRAULIC PUMP AND RIGHT HYDRAULIC SYSTEM ON HIGH. AIRCRAFT RETUREND TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE LEFT ENGINE HYDRAULIC PUMP, OPERATIONAL TEST GOOD.

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