Service difficulty report · Control Valve · Boeing 767323

Difficulty date
July 21, 2019
Submitted
July 24, 2019
Operation
Air carrier
Aircraft
N379CX
Make and model
Boeing 767323
Aircraft serial
25199
Aircraft time
99,384 hours, 16,208 cycles
Engine
Ge CF6*
Part
Control Valve
Part number
97980612
Part serial
1518C
Condition
Malfunctioned
Location
Apu
Stage of operation
IN
How discovered
C
Nature of condition
O
Precautionary procedure
K

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

What was found

APU SURGE PERFORM ECU TEST: REPLACED APU SURGE CONTROL VALVE IAW AMM 49-53-01 (ETOPS SS). WORKED DISCREPANCY ON NAC WO 116376, NR-00002.