SDR ASAA2016092018089

Service difficulty report · Fmc · Boeing 737990ER

Difficulty date: September 20, 2016
Submitted: September 22, 2016
Operation: Air carrier
Aircraft: N494AS
Make and model: Boeing 737990ER
Aircraft serial: 41729
Aircraft time: 2,436 hours, 775 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: CL
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

CLIMBING THROUGH FL340, CAPTAIN'S FMC FAILED, VTK DISPLAYED. AFTER APPROXIMATELY 30 SECONDS AIRCRAFT RESOLVED ISSUE ON ITS OWN. OPS NORMAL. ACFT GROUNDED. TROUBLESHOT IAW FIM 34-61 TASK 836, ALL TESTS PASS WITH NO DEFECTS. CHECKED GOOD FOR SERVICE.