SDR ASAA2015070412328

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: July 4, 2015
Submitted: July 7, 2015
Operation: Air carrier
Aircraft: N459AS
Make and model: Boeing 737990ER
Aircraft serial: 36352
Aircraft time: 5,164 hours, 1,685 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Failed
Location: Right
Stage of operation: NR
How discovered: 9
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

RIGHT FMC FAILED ENROUTE, QRH COMPLETED, SINGLE FMC OPERATION. ACFT GROUNDED. PERFORMED FIM TASK 34-61, TASK 836, AR1 FOR NR 2 FMC. ALL TESTS PASS. FMC NR 2 FUNCTION NORMAL, NO DEFECTS. FMC SOURCE SELECT SWITCH PLACED TO NORMAL POSITION.