Service difficulty report · Wire · Boeing 7372X6C

Difficulty date
October 1, 2007
Submitted
October 5, 2007
Operation
Air carrier
Aircraft
N840AL
Make and model
Boeing 7372X6C
Aircraft serial
23124
Aircraft time
57,727 hours, 50,991 cycles
Part
Wire
Part number
AN32101
Condition
Broken
Location
E/E Bay Door
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
A

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

What was found

NON-ETOPS CARGO FLIGHT 909 HNL-LIH - DURING CLIMB, THE CREW NOTED THAT THE PRESSURE CONTROL PANEL SHOWED AUTO FAIL AND THE AIRCRAFT WAS NOT PRESSURIZING. THE CREW ATTEMPTED TO SWITCH TO STANDBY CONTROL AND WERE STILL UNABLE TO PRESSURIZE THE CABIN. THE CREW RETURNED TO HNL WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE ELECTRONIC EQUIPMENT BAY DOOR UNLATCHED AND OPEN. MAINTENANCE ALSO FOUND A DAMAGED WIRE ON THE DOOR OPEN SWITCH INDICATOR CIRCUIT. THIS PREVENTED DOOR OPEN ANNUNCIATION ON THE FLIGHT DECK. THE AIRCRAFT WAS PRESSURE CHECKED WITH THE DOOR CLOSED AND RETURNED TO SERVICE UNDER MEL 52-3 FOR THE INOPERATIVE DOOR INDICATION. MAINTENANCE LATER REPAIRED THE BROKEN SWITCH WIRE AND FUNCTION CHECKED THE INDICATION PER MM 52-71-31 AND REMOVED MEL 52-3. THE AIRCRAFT WAS RETURNED TO SERVICE.

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