Service difficulty report · Housing · Swrngn SA226TC

Difficulty date
September 14, 2008
Submitted
November 3, 2008
Operation
General aviation
Make and model
Swrngn SA226TC
Aircraft time
44,755 hours
Engine
Garrtt TPE33110UA
Part
Housing
Condition
Separated
Location
Hydraulic Pump
Component
Hydraulic Pump · Vickers
Component part number
PV304426
Stage of operation
TX
How discovered
O
Nature of condition
K
Precautionary procedure
D

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

What was found

(CAN) DURING ENGINE START THE NR 2 ENGINE HYDRAULIC PUMP BEGAN TO LEAK SIGNIFICANTLY CAUSING A LOSS OF SYSTEM PRESSURE AND FLUID. UPON INSPECTION BY MX THE PUMP WHICH WAS JUST INSTALLED 2.5 HRS PRIOR WAS FOUND TO HAVE SEPARATED AT THE PUMP HOUSING HALVES AND THE O RING SEAL WAS EXTRUDED. THE INTERNAL WRENCHING BOLTS WHICH HOLD THE HALVES TOGETHER APPEARED TO HAVE PULLED OUT OF THE THREADS ALLOWING THE PUMP HALVES TO SEPARATE TO THE POINT OF PUMP FAILURE. THE COMPANY WILL SEND THE PUMP FOR WARRANTY REPAIR.