SDR 2007UALA04478

Service difficulty report · Fmc · Boeing 777222

Difficulty date: October 27, 2007
Submitted: November 1, 2007
Operation: Air carrier
Aircraft: N787UA
Make and model: Boeing 777222
Aircraft serial: 26939
Aircraft time: 45,883 hours, 7,108 cycles
Engine: Pwa PW4090
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Cockpit
Stage of operation: IN
How discovered: O
Nature of condition: W
Precautionary procedure: O

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

What was found

CAPTAIN'S FMC POINTING 15 DEGREES RIGHT, F/O' S POINTS STRAIGHT AHEAD. LEFT CALCULATED BEARING HEADING 15 DEGREES DIFFERENCE FROM RIGHT. EXTENSIVE TROUBLE SHOOTING PERFORMED ON AIMS. UNABLE TO DUPLICATE FAULT. FMC TESTS NORMALLY AFTER RESET. A/C OK FOR SERVICE.