Service difficulty report · Sdu · Boeing 777222

Difficulty date
September 12, 2011
Submitted
October 7, 2011
Operation
Air carrier
Aircraft
N784UA
Make and model
Boeing 777222
Aircraft serial
26951
Aircraft time
64,556 hours, 9,182 cycles
Engine
Pwa PW40903
Part
Sdu
Part number
8220314102
Part serial
42
Condition
Faulty
Location
Satcom
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

SATCOM VOICE VOICE PORTION OF SATCOM FAILS. ADVISORY MSG06- NOT ACTIVE CRUISE INTERMITTENT; SATELLITE DATA UNIT (LEFT) HAS NO OUTPUT ON DATA TO CMU BUS (429). DB- LEFT AIMS MSG-2360121 ACTIVE ER INTER MSG-2360121 ACTIVE ER HARD MSG-2360131 ACTIVE ER HARD MSG-2360131 ACTIVE ER HARD MSG-2360041 INACTV ER INTER MSG-2368893 INACTV ER INTER. REPLACED SDU PER MM. VOICE & DATA TESTED NORMAL ON GRD.