SDR AU001255

Service difficulty report · Relief Valve · Boeing 737376

Difficulty date
December 29, 2000
Submitted
March 20, 2001
Operation
General aviation
Make and model
Boeing 737376
Engine
Cfmint CFM563C
Part
Relief Valve
Part number
735511A
Condition
Failed
Location
Alternator
Part time
14,949 cycles
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

(AUS) NR 2 ENGINE CONSTANT SPEED DRIVE (CSD) INTERNAL FAILURE. INVESTIGATION FOUND THAT THE OIL PRESSURE RELIEF VALVE HAD BLOWNOUT AND THE ATTACHMENT BOLTS HAD SHEARED. OIL LOSS THEN CAUSED CSD FAILURE.