Service difficulty report · Control Unit · Boeing 767322

Difficulty date
June 3, 2004
Submitted
June 15, 2004
Operation
Air carrier
Aircraft
N643UA
Make and model
Boeing 767322
Aircraft serial
25093
Aircraft time
57,200 hours, 9,220 cycles
Engine
Pwa PW4060
Part
Control Unit
Condition
Overheated
Location
Seat Lombar
Stage of operation
NR
How discovered
O
Nature of condition
M
Precautionary procedure
O

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

What was found

LOMBAR CONTROL SEAT 9A IS HOT AND MELTING. REPLACED SWITCH. THE BURNED BACK CYCLER SWITCH WAS AN OLDER, ORIGINAL UNIT. THE ORIGINAL BACK CYCLER SWITCH WAS UPGRADED IN 2001 DUE TO RELIABILITY PROBLEMS. AN IMPROVED, REPLACEMENT SWITCH WAS DEVELOPED AND INTRODUCED IN DECEMBER OF 2001.