Service difficulty report · Warning Flag · Boeing 737990ER

Difficulty date
October 15, 2014
Submitted
October 17, 2014
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
6,326 hours, 1,978 cycles
Part
Warning Flag
Condition
False Activation
Location
Fmc
Stage of operation
CR
How discovered
9
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

LEFT FMC FAILED AT CRUISE WITH MAP AND VTK FLAGS ON CAPT SIDE, BOTH CDU'S LACKED FMC DATA. ACFT GROUNDED. PERFORMED LT FMC BITE REF 34-61-00. NO FAULTS FOUND. PERFORMED 34-61, TASK 836. NO ACTIVE FAULTS FOUND. SYS CHECKED NORMAL. NO HISTORY IN 30 DAYS.