Service difficulty report · Modulating Valve · Boeing 76733A

Difficulty date
January 28, 2019
Submitted
January 28, 2019
Operation
Air carrier
Aircraft
N1439A
Make and model
Boeing 76733A
Aircraft serial
28495
Aircraft time
68,793 hours, 15,962 cycles
Part
Modulating Valve
Part number
3987865
Part serial
5563
Condition
Faulty
Location
Ac Bay
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

REMOVE AND REPLACE FWD ZONE TRIM AIR MODULATING VALVE PER MCC(<P>REMOVED AND REPLACED FWD ZONE TRIM AIR MODULATING VALVE PER MCC IAW AMM 21-61-07 AND OPS CHECK IS GOOD AT THIS TIME.</P>)

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