Service difficulty report · Flow Valve · Boeing 7673JHF

Difficulty date
January 8, 2021
Submitted
January 11, 2021
Operation
Air carrier
Aircraft
N644GT
Make and model
Boeing 7673JHF
Aircraft serial
37810
Aircraft time
20,510 hours, 4,788 cycles
Part
Flow Valve
Part number
3964961
Part serial
326
Condition
Malfunctioned
Location
Lt A/C Pack
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

LEFT PACK OFF LIGHT FAIL TO ILLUMINATE WHEN LEFT PACK TURNED OFF. TRANSFERRED TO MDDR 140633, PER MEL 21-51-01-01. PLACARD INSTALLED. REMOVED AND REPLACED LEFT FLOW CONTROL AND SHUTOFF VALVE. BITE TEST PTI OK AND OPERATIONS TEST NORMAL, PER AMM 21-51-011-401. CLEARED MDDR 140633. MCC NOTIFIED.

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