SDR 9606899930

Service difficulty report · Circuit Breakers · Doug DC931

Difficulty date
March 22, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N89S
Make and model
Doug DC931
Aircraft serial
47402
Part
Circuit Breakers
Condition
Tripped
Location
Fuel Boost Pumps
Stage of operation
CL
Nature of condition
O
Precautionary procedure
A

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

What was found

APPROXIMATELY THREE MINUTES AFTER TAKEOFF, NUMEROUS FUEL BOOST PUMP CIRCUIT BREAKERS POPPED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED WIRING AT PUMP SWITCHES ON OVERHEAD PANEL, AT CIRCUIT BREAKER PANEL AND AT DISCONNECT AT FS 237, ALL CHECKED NORMAL. RAN PUMPS WITH ENGINE POWER, GROUND POWER AND APU POWER WITH NO PROBLEMS FOUND. DISCREPANCY COULD NOT BE DUPLICATED AND AIRCRAFT RETURNED TO SERVICE.

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