SDR ASAA2013072295657

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: July 22, 2013
Submitted: July 24, 2013
Operation: Air carrier
Aircraft: N408AS
Make and model: Boeing 737990ER
Aircraft serial: 41732
Aircraft time: 2,337 hours, 755 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Faulted
Location: Cockpit
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

AT CRUISE, MOMENTARY HARD FAILURE ON CAPTAIN FMC. FIXED ITSELF IN 20 SEC. ACFT GROUNDED. PERFORMED INFLIGHT FAULT REPORT. FOUND ON FAULT SYNC ERR BETWEEN FMC 1 AND 2. NO OTHER FAULTS AT THIS TIME. CURRENT STATUS SHOWS NO FAULTS. FMC BITE TEST NORMAL AT THIS TIME IAW 34-61-00.