Service difficulty report · Modulating Valve · Boeing 767332

Difficulty date
September 12, 2010
Submitted
September 13, 2010
Operation
Air carrier
Aircraft
N598HA
Make and model
Boeing 767332
Aircraft serial
23278
Aircraft time
71,141 hours, 31,657 cycles
Engine
Ge CF680A
Part
Modulating Valve
Part number
7738555
Part serial
870913
Condition
Malfunctioned
Location
Cabin Air
Part time
7,001 hours, 1,462 cycles
Stage of operation
IN
How discovered
V
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

ETOPS SIGNIFICANT SYS - AIR SUPPLY MODULE FAULTS FAN AIR MODULATION VALVE. R & R FAN AIR MODULATING VALVE IAW AMM 36-11-16-004-001-001 AND AMM 36-11-16-404-016-001 AND HAL105 NR 598111. BITE CK OF ASM, OK.