Service difficulty report · Drive Unit · Boeing 777222

Difficulty date
November 7, 2011
Submitted
December 2, 2011
Operation
Air carrier
Aircraft
N771UA
Make and model
Boeing 777222
Aircraft serial
26932
Aircraft time
64,650 hours, 11,821 cycles
Engine
Pwa PW4077
Part
Drive Unit
Part number
20414440402
Part serial
47
Condition
Faulty
Location
Weather Radar
Stage of operation
CR
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

UNCOMMANDED A-P DISCONNECT 5 HOURS 45 MINUTES AFTER T/O. FL400 MACH .83. REPLACED WX DRIVE UNIT, MAINT MSG 34-44032. ACCOMPLISHED FULL CAT 3 TEST PASSED.