Service difficulty report · Drive System · Boeing 777222

Difficulty date
October 29, 2010
Submitted
November 5, 2010
Operation
Air carrier
Aircraft
N793UA
Make and model
Boeing 777222
Aircraft serial
26946
Aircraft time
58,753 hours, 8,578 cycles
Engine
Pwa PW4090
Part
Drive System
Condition
Failed
Location
Wx Radar Sys
Component
Radar Sys
Component part number
20414440402
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

WXR SYS, WXR DISPLAY IS NOT PRESENT WHEN WXR SELECTED ON EFIS CONTROL PANEL. STATUS MSG03- ACTIVE CRUISE INTERMITTENT; WXR ANTENNA DRIVE IS NOT CONNECTED OR FAILED. DB- WXR TRANSCEIVER (RT) MSG04- NOT ACTIVE CRUISE INTERMITTENT; WXR ANTENNA DRIVE IS NOT CONNECTED OR FAILED. MSG-3444031 INACTV ER INTER MSG-3444031 INACTV ER INTER MSG-3444032 ACTIVE ER INTER MSG-3444032 INACTV ER INTER. UPON ARR. BOTH SYS TEST FAIL. REPLACED ANTENNA DRIVE ASSY. TESTS OK IAW MM.