Service difficulty report · Pump · Bac 146200A

Difficulty date
January 7, 2004
Submitted
March 1, 2004
Operation
General aviation
Make and model
Bac 146200A
Aircraft time
31,756 hours
Engine
Lyc ALF502R5
Part
Pump
Part number
716988
Part serial
MX564508
Condition
Leaking
Location
Hydraulic Sys
Part time
23,682 hours, 21,362 cycles
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
E, A

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

What was found

(CAN) IN FLIGHT SHUT DOWN OF NR 2 ENGINE DUE TO LOSS OF OIL PRESSURE AND QUANTITY. MAINTENANCE FOUND EVIDENCE OF HYD FLUID MIGRATION INTERNALLY FROM HYDRAULIC PUMP TO THE PUMP SHAFT. SUSPECT THAT HYD FLUID CAUSED DETERIORATION OF THE PUMP SHAFT SEAL (O-RING) TO THE POINT THAT IT CAUSED THE ENGINE OIL TO BE LOST. PUMP REPLACED. NR 2 ENGINE ALSO BEING REPLACED.