Service difficulty report · Computer · Boeing 777222

Difficulty date
November 18, 2012
Submitted
December 24, 2012
Operation
Air carrier
Aircraft
N215UA
Make and model
Boeing 777222
Aircraft serial
30221
Aircraft time
45,097 hours, 9,630 cycles
Engine
Pwa PW4077
Part
Computer
Part number
8220006103
Part serial
47
Condition
Faulty
Location
Autopilot Sys
Stage of operation
NR
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

AUTOPILOT BACKDRIVE L LEFT AUTOPILOT BACKDRIVE SYSTEM INOPERATIVE OR DEGRADED DUE TO FAILURE IN LEFT COLUMN, WHEEL OR PEDAL BACKDRIVE ACTUATOR, LEFT AFDC OR INTERCONNECTING WIRING. STATUS MSG-2214931 ACTIVE CL MODE. LEFT CONTROL COLUMN BACK DRIVE ACT INOP. MANT MSG 22-14931. REPLACED AFDC L AND REPLACED L COLUMN BACKDRIVE ACTUATOR PER MM. PERFORMED LRU REPLACEMENT TEST -PASSED.