Service difficulty report · Control Unit · Boeing 747451

Difficulty date
January 10, 2012
Submitted
January 13, 2012
Operation
Air carrier
Aircraft
N105UA
Make and model
Boeing 747451
Aircraft serial
26473
Aircraft time
72,141 hours, 8,564 cycles
Engine
Pwa PW4056
Part
Control Unit
Part number
1167018140
Part serial
22
Condition
Failed
Location
Emergency Lights
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

CONTROL PANEL FOR LIGHTS IN UPPER DECK GALLEY IS INOPERATIVE, ALSO UNABLE TO CONTROL FROM PANEL AT 1L. E-ZONE LIGHTS WERE INOPERATIVE BUT ABLE TO RECOVER WITH OVERRIDE AT DOOR 2R, ALSO FASTEN SEAT BELT AND NO SMOKING SIGNS INOP IN E-ZONE, AUDIO IN E-ZONE ALSO INOPERATIVE. UPPER DECK 3 OUT 4 RECESSED LIGHTS IN AFT PART OF CABIN ARE INOPERATIVE. REPLACED UPPER DECK CCTM PER MM. REPLACED CENTRAL MANAGEMENT UNIT PER MM, OPS NORMAL.