Service difficulty report · Controller · Boeing 767322

Difficulty date
September 12, 2011
Submitted
September 14, 2011
Operation
Air carrier
Aircraft
N643UA
Make and model
Boeing 767322
Aircraft serial
25093
Aircraft time
88,122 hours, 14,035 cycles
Engine
Pwa PW4060
Part
Controller
Part number
211738815
Part serial
147
Condition
Faulty
Location
Ac Pack
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
D

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

What was found

L PACK OFF LIGHT ON RUNWAY. ACP BITE TEST, PACK OPERATES NORMALLY IN STBY CONTROL. MAINT STATUS MESSAGE-CABIN ALT AUTO 2 ACCOMPANIED BY MOMENTARY FLUCTUATION IN CABIN ALT. REPLACED CONTROLLER. DUE TO PREVIOUS HISTORY REPLACE PACK TEMP CONTROLLER.