Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
August 27, 2017
Submitted
August 29, 2017
Operation
Air carrier
Aircraft
N431AS
Make and model
Boeing 737990ER
Aircraft serial
43255
Aircraft time
15,304 hours, 5,047 cycles
Part
Fmc
Condition
Malfunctioned
Location
Right
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

RIGHT FMC FAILED AT FL340 IN CRUISE FLIGHT. FIRST OFFICER`S VTK AND MAP FLAGS. SYSTEM RECOVERED AFTER 1 MINUTE. SINGLE FMC OPS IN SCRATCH PAD MESSAGE CLEARED. ACFT GROUNDED. PERFORMED FIM 34-61 TASK 807 WITH NO FAULTS NOTED. PERFORMED FMC BITE FIM 34-61-TASK 801. INFLIGHT FAULT SHOWS FMC-R PGM FAULT. INTERMITTENT FAULT. AIRCRAFT OK FOR SERVICE.