Service difficulty report · Controller · Airbus A320214

Difficulty date
April 21, 2008
Submitted
April 23, 2008
Operation
Air carrier
Aircraft
N110UW
Make and model
Airbus A320214
Aircraft serial
1112
Aircraft time
22,723 hours, 15,116 cycles
Part
Controller
Condition
Failed
Location
Cabin Pressure
Stage of operation
CR
How discovered
O
Nature of condition
J, G
Precautionary procedure
B, A

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

What was found

FLT 1697 - CLT-RSW - DIV - CREW REPORTED BOTH PACKS FAULTED SIMULTANEOUSLY AT FL 360 AND WOULD NOT RESET CAUSING AN EMERGENCY DESCENT. PACKS RESET THEMSELVES AUTOMATICALLY ON DESCENT, THEN FAULTED AGAIN CAUSING CABIN ALTITUDE WARNING. REACHED APPROX 10,200 FT. CREW ELECTED TO DIVERT TO TPA FOR MAINTENANCE. MAINTENANCE REMOVED AND REPLACED THE OUTFLOW VALVE AND CABIN PRESSURE CONTROLLER. TEARDOWN REPORTS INDICATES THE CABIN PRESSURE CONTROLLER WAS A CONFIRMED FAILURE. REASON FOR REMOVAL JUSTIFIED. FOUND SHORTED T14 TRANSISTOR. (S)

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