SDR UALA2010091603444

Service difficulty report · Module · Boeing 777222

Difficulty date: September 15, 2010
Submitted: September 17, 2010
Operation: Air carrier
Aircraft: N204UA
Make and model: Boeing 777222
Aircraft serial: 28713
Aircraft time: 52,394 hours, 7,471 cycles
Engine: Pwa PW4090
System (JASC): 2230 · Auto Throttle System
Part: Module
Condition: Malfunctioned
Location: Autothrottles
Stage of operation: NR
How discovered: O
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

IAW CREW AUTOTHROTTLE LT AND RT EICAS MSGS DISPLAYED. AUTO THROTTLES WILL NOT MOVE DURING GROUND TEST WITH 'AUTO THROTTLE SERVO L,R' STATUS MESSAGE DISPLAYED ON EICAS. MAINT MESSAGE DISPLAYED AFTER GROUND TEST 22-22091, 22-22092, 22 -22081, 22-22082. VERIFIED MODE PANEL NOT AT FAULT. REPLACED I-O MODULE M008 IN LT AIMS CABINET IAW MM, OPS NORMAL.