SDR 0301949992

Service difficulty report · Line · Doug DC931

Difficulty date: October 11, 2003
Submitted: October 23, 2003
Operation: Air carrier
Aircraft: N896OE
Make and model: Doug DC931
Aircraft serial: 45869
Aircraft time: 80,495 hours, 73,567 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Line
Part number: DWG7920134785
Condition: Broken
Location: Hyd System
Stage of operation: CR
How discovered: O
Nature of condition: K, J
Precautionary procedure: H, A

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

What was found

DURING CRUISE FLIGHT, BOTH THE LEFT HYDRAULIC SYSTEM PRESSURE AND QUANTITY DROPPED TO ZERO INDICATION. CREW APPLIED COM PROCEDURES, VERIFIED COMPLETE LOSS OF SYSTEM, AND LANDED UNEVENTFULLY AT MSP. MAINTENANCE FOUND A BROKEN ELEVATOR PRESSURE LINE AND REPLACED IT. ALSO, REPLACED THE LEFT ENGINE DRIVEN HYDRAULIC PUMP AND RESERVICED THE SYSTEM. AIRCRAFT RETURNED TO SERVICE.

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