Service difficulty report · Valve · Boeing 767322

Difficulty date
August 10, 2009
Submitted
August 10, 2009
Operation
Air carrier
Aircraft
N656UA
Make and model
Boeing 767322
Aircraft serial
25394
Aircraft time
70,442 hours, 11,421 cycles
Engine
Pwa PW4060
Part
Valve
Part number
420365
Part serial
925A
Condition
Malfunctioned
Location
E&E Bay
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

FWD EQUIP COOLING ISSUE, RTBL. TROUBLESHOT PER FIM 21-58 -00 FIG 105, REPLACED FAULTY INTERCONNECT VALVE NO HELP. TRIED NEW IND CARD M867, NO HELP. ORIGINAL REINSTALLED. FWD EQUIP VALVE AND VALVE LIGHT STILL ON. REPLACED RELAY K1006 AND K340, NO HELP. TROUBLESHOT PER FIM 21-58-00 NEEDS OVERRIDE VALVE. REPLACED OVERRIDE VALVE.