Service difficulty report · Control Valve · Boeing 7673S1

Difficulty date
August 23, 2014
Submitted
August 25, 2014
Operation
Air carrier
Aircraft
N640GT
Make and model
Boeing 7673S1
Aircraft serial
25221
Aircraft time
75,257 hours, 15,861 cycles
Part
Control Valve
Part number
3964621
Part serial
518
Condition
Faulty
Location
Ac Bay
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

LEFT PACK DIDN’T COME ON WHEN SELECTED AFTER MULTIPLE ATTEMPTS. REPLACED NR 1 PACK FLOW CONTROL VLV. OPERATIONS CHECKED GOOD IAW AMM 21-51-01.

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