Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
October 2, 2016
Submitted
October 4, 2016
Operation
Air carrier
Aircraft
N434AS
Make and model
Boeing 737990ER
Aircraft serial
61620
Aircraft time
2,272 hours, 693 cycles
Part
Fmc
Condition
Failed
Location
Left
Stage of operation
CR
How discovered
O
Nature of condition
O
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 FOR 30 TO 60 SECONDS THEN RETURNED TO NORMAL. SEVERAL TIMES ENROUTE ( 3 TIMES). GROUNDED - YES. LEFT FMC OPS TESTED PER B737-900 AMM TASK 34-61-00 AND LEFT FMC COMPUTER OPS CHECK GOOD, GROUND VERIFICATION TEST NORMAL.