Service difficulty report · Control Valve · Boeing 75729J

Difficulty date
July 28, 2020
Submitted
July 30, 2020
Operation
Air carrier
Aircraft
N757QM
Make and model
Boeing 75729J
Aircraft serial
27203
Aircraft time
59,615 hours, 32,471 cycles
Part
Control Valve
Part number
3964801
Part serial
712
Condition
Malfunctioned
Location
Left A/C Bay
Stage of operation
AP
How discovered
O
Nature of condition
S
Precautionary procedure
O

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

What was found

LEFT AND RIGHT BLEED FLUCTUATION ON APPROACH ASSOCIATED WITH HOT PACK TEMPERATURE. FOR TROUBLESHOOTING REPLACED LEFT PACK FLOW CONTROL VALVE.

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