SDR CHI1923

Service difficulty report · Pump Motor · Boeing 234

Difficulty date: October 2, 1997
Submitted: March 26, 2000
Operation: General aviation
Filed by: CHIR823C
Columbia Helicopters, Inc
Make and model: Boeing 234
Aircraft serial: MJ003
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Pump Motor
Condition: Leaking
Location: Agb Hyd
Component: Sperryvicrs
Stage of operation: IN
Nature of condition: K
Precautionary procedure: K

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

What was found

AT SHUT DOWN OF AIRCRAFT WHILE STARTING APU, AGB HYDRAULIC MOTOR PUMP STARTED LEAKING AND SPRAYING HYDRAULIC OIL. AFTER SHUTTING DOWN OF APU AND CLOSER INSPECTION OF AGB PUMP, FOUND CASE HALF MOUNTING EARS CRACKED IN HALF WHICH SEPARATED BACK HALF OF PUMP FROM FORWARD DRIVE SECTION. CAUSE UNKNOWN. (X)

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