Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
February 11, 2021
Submitted
February 17, 2021
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
21,229 hours, 6,754 cycles
Part
Fmc
Condition
Malfunctioned
Location
Right
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

RH FMC FAIL WITH VTK FLAG, PERFORMED QRH PROCEDURE, SYSTEM RESTORED ITSELF BEFORE FMC SWITCH MOVED TO "BOTH ON LEFT". GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 836 INITIAL EVALUATION CHECK GOOD. NO HISTORY LAST 90 DAYS.