SDR ASAA2015090912994

Service difficulty report · Warning Message · Boeing 737990ER

Difficulty date: September 9, 2015
Submitted: September 11, 2015
Operation: Air carrier
Aircraft: N468AS
Make and model: Boeing 737990ER
Aircraft serial: 41735
Aircraft time: 4,581 hours, 1,515 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Warning Message
Condition: False Activation
Location: Fmc
Stage of operation: CR
How discovered: O
Nature of condition: N
Precautionary procedure: O

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

What was found

AT FL 340, RT FMC FAILED VTK, FOLLOWED BY MAP FLAG. QRH 11.3 COMPLETE. DUAL OPS NOT RESTORED, CONTINUED WITH SINGLE FMC OPS. ACFT GROUNDED. UNABLE TO DUPLICATE DEFECT, RT FMC OPS NORMAL REF MM 34-61-00. NO VTK OR MAP FLAGS. SELECT SWITCH PLACED TO NORMAL.