Service difficulty report · Valve · Boeing 73776Q

Difficulty date
December 23, 2012
Submitted
January 3, 2013
Operation
Air carrier
Aircraft
N997AM
Make and model
Boeing 73776Q
Aircraft serial
30283
Aircraft time
30,257 hours, 17,803 cycles
Engine
Cfmint CFM567B20
Part
Valve
Part number
32911866
Part serial
GRTM9816
Condition
Leaking
Location
Lt Engine
Part time
30,257 hours, 17,803 cycles
Stage of operation
TX
How discovered
O
Nature of condition
K, J
Precautionary procedure
O

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

What was found

DURING LT ENGINE START, A FUEL LEAK WAS DETECTED WITH 52 DROPS PER MINUTE. MX PERFORMED REVISION DETECTING THE HPTCCV VALVE DRAIN WITH LEAK WITHIN OPERATION LIMITS IAW MM 71-71-00 PAGE 606; SO THE LEFT ENGINE START WAS PERFORMED AGAIN ELIMINATING THE FUEL LEAK IAW MM 71-00-00, TEST 3A, ALL CORRECT. MX REPLACED THE LT ENGINE HPTACC VALVE IAW MM 75-21-01, AND PERFORMED OPS TEST IAW MM 71-00-00, ALL CORRECT.

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