SDR ASAA2013060895042

Service difficulty report · Fmc · Boeing 737890

Difficulty date: June 8, 2013
Submitted: June 11, 2013
Operation: Air carrier
Aircraft: N512AS
Make and model: Boeing 737890
Aircraft serial: 39043
Aircraft time: 18,557 hours, 5,782 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
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

FMC ANNUNCIATOR ILLUMINATED WITH A MAP AND VTK FLAGS ON CAPTAINS IND. REF QRH FMC FAIL ABNORMAL CHECKLIST AND DETERMINED FMC - LT HAD FAILED. CONTINUED OT BLI WITH FMC TRANSFER SWITCH IN BOTH ON RT. ACFT GROUNDED. ATTEMPTED BITE CHECK. FMC LOCKED UP. CYCLED CBS FOR LT FMC. ALIGNED ADIRUS. REF AMM 34-21-00, ACCOMP BITE CHECK. NO FAULTS OR ACTIVE FAULTS NOTED. GROUND VERIFICATION SUCCESSFUL.