SDR ASAA2016062217126

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: June 22, 2016
Submitted: June 24, 2016
Operation: Air carrier
Aircraft: N433AS
Make and model: Boeing 737990ER
Aircraft serial: 41704
Aircraft time: 10,687 hours, 3,431 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Faulted
Location: Cockpit
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NO FMC DATA ON CAPT'S DISPLAY MAP AND NO FMC DATA ON BOTH CDU'S WITH VTK FLAG ON CAPT'S NAV DISPLAY. RAN CHECK LIST FOR FMC FAIL. NORMAL OPS RESTORED. ACFT GROUNDED. FFR LT FMC SHOWS, PGM FAULT, I, LAST FLT. FFR RT FMC SHOWS, FMC-LT PRES POS LAT RATE, I, FAULT. NO HISTORY. INTERMITTENT FAULT. OPS CHECK LT AND RT FMC GOOD, REF AMM 34-61-00.