SDR ASAA2014052407905

Service difficulty report · Fmc · Boeing 737890

Difficulty date: May 24, 2014
Submitted: May 28, 2014
Operation: Air carrier
Aircraft: N597AS
Make and model: Boeing 737890
Aircraft serial: 35689
Aircraft time: 23,402 hours, 7,289 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Faulted
Location: Left
Stage of operation: NR
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

VTK AND MAP APPEARED ON CAPTAIN'S ND. FMC FAILURE CHECKLIST COMPLIED WITH CAPTAIN'S FMC SHOWS FAILED, NOT RECOVERED. ACFT GROUNDED. NO HISTORY - 60 DAYS. ALIGNED NR 1 ADIRS. BITE TEST NR 1 FMC, CURRENT STATUS OF SENSORS, GOOD. LEFT FMC FMC SHOWED SEVERAL FAULTS LAST FLT INCLUDING, "ADIRS RIGHT L". ALL FAULTS CURRENTLY CHECK GOOD. ALL WERE INTERMITTENT FAULTS. GROUND VERIFICATION TEST GOOD, REF FIM 34-31/T801.