SDR ASAA2016051216720

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: May 12, 2016
Submitted: May 16, 2016
Operation: Air carrier
Aircraft: N462AS
Make and model: Boeing 737990ER
Aircraft serial: 36362
Aircraft time: 8,037 hours, 2,620 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Failed
Location: Right
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

RIGHT FMC FAILURE AT CRUISE 30 MINUTES AFTER DEPARTURE. GOT "SINGLE FMC OPERATION" ON SCRATCHPAD OF FMC, NO BEARING, DISTANCE ON POS SHIFT 3/3 FMC-R. ACFT GROUNDED. PERFORMED FMC BITE TEST, BITE CHECK GOOD REF FIM 34-61, TASK 801. PERFORMED FMC OPS TEST, OPS TEST NORMAL. REF AMM 34-61-00.