Service difficulty report · Pump · Agusta AB139

Difficulty date
July 26, 2010
Submitted
July 27, 2010
Operation
General aviation
Aircraft
N923AH
Make and model
Agusta AB139
Aircraft serial
31284
Aircraft time
282 hours, 1,170 cycles
Engine
Pwc PT6C67C
Part
Pump
Part number
3G2910V00133
Part serial
CK867
Condition
Leaking
Location
Hyd System
Part time
282 hours, 1,170 cycles
Stage of operation
CL
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

AFTER TAKEOFF, AFTER SELECTION OF LANDING GEAR UP, CAS DISPLAYED HYD UTIL PRESS AND MAIN GEAR POSITION INDICATION TURNED TO AMBER. IAW RFM MALFUNCTION PROCEDURE, LANDING GEAR RESELECTED DOWN BUT WOULD NOT LOCK. EMERGENCY LANDING GEAR EXTENSION DEPLOYED & LANDING GEAR SUCCESSFULLY EXTENDED. CONTINUED TO DESTINATION AND LANDED WITHOUT FURTHER INCIDENT. INVESTIGATION REVEALED UTILITY SYS HYD FLUID HAD LEAKED OUT THROUGH PUMP DRAIN. ACFT OEM WILL ARRANGE FOR TEARDOWN & INVESTIGATION OF FAULTY PUMP.

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