SDR ASAA2013061395104

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: June 13, 2013
Submitted: June 18, 2013
Operation: Air carrier
Aircraft: N407AS
Make and model: Boeing 737990ER
Aircraft serial: 41731
Aircraft time: 1,944 hours, 634 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

AT CRUISE FL 340, RT FMC FAILED. FMC FAIL CHECKLIST COMPLETED. UNABLE TO RESTORE DUAL FMC OPERATION. ACFT GROUNDED. CYCLED CIRCUIT BREAKER. RT FMC OPS TEST NORMAL, REF MM 34-61-00. HAS NO OTHER RECENT HISTORY. IAW FIM 34-61, TASK 836, INTERMITTENT FAULT. REQUIRES NO FURTHER ACTION.