Service difficulty report · Warning Message · Boeing 777222

Difficulty date
December 28, 2011
Submitted
December 30, 2011
Operation
Air carrier
Aircraft
N784UA
Make and model
Boeing 777222
Aircraft serial
26951
Aircraft time
65,656 hours, 9,313 cycles
Engine
Pwa PW40903
Part
Warning Message
Condition
Multiple Fail
Stage of operation
NR
How discovered
O
Nature of condition
G, J
Precautionary procedure
O

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

What was found

EPR INDICATION (ENGINE) - BLANK MSG01- ACTIVE CRUISE MODE DEPENDENT; PROBE HEAT (L ENG) POWER IS NOT AVAILABLE. DB- ELECTRONIC ENGINE CONTROL (L ENG, CH A) MSG-7361011 ACTIVE ER MODE. ACCCOMPLISHED PROBE HEAT TEST PER FIM 77-11-812 AND FAILED. FOUND 115V AT DM73005A. RESISTANCE AT D71028J 12.3 OHMES. CHECKED FOR SHORTS TO GROUND AND NONE FOUND. CHECKED CONTINUITY THROUGH PLUGS DM73005F TO D71028P AND GOOD AND NO SHORTS. PROBE HEATS DURING TEST, SUSPECT ERU AT FAULT.