SDR ASAA2016051316721

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: May 13, 2016
Submitted: May 16, 2016
Operation: Air carrier
Aircraft: N477AS
Make and model: Boeing 737990ER
Aircraft serial: 40716
Aircraft time: 3,734 hours, 1,200 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Failed
Stage of operation: CR
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

CAPTAIN FMC FAILED THEN RECOVERED, 45 MIN LATER BOTH FMC'S FAILED. VTK & MAP OBSERVED. ONCE AGAIN RESTORED ITSELF. NOTE, THERE WAS A ROUTE NR 2 IN THE FMC THAT CURRENT CREW DID NOT INPUT. ACFT GROUNDED. RESET BOTH FMCS, ACCOMPLISHED GROUND VERIFICATION REF AMM FMC SYS. OPS TEST AMM 34-61-00, NO FAULTS NOTED.