Service difficulty report · Unknown · Boeing 737990ER

Difficulty date
February 19, 2023
Submitted
February 20, 2023
Operation
Air carrier
Aircraft
N428AS
Make and model
Boeing 737990ER
Aircraft serial
36353
Aircraft time
25,412 hours, 7,970 cycles
Part
Unknown
Part number
UNKNOWN
Condition
Unknown
Location
Unknown
Stage of operation
NR
How discovered
9
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

SINGLE L FMC FAIL. VTK AND AMBER "MAP" ON CA SIDE ND INFLIGHT. FMC BOTH ON RIGHT FOR SINGLE FMC OPS FOR REMAINDER OF FLIGHT. GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 801 FOUND MULTIPLE PGM FAULTS ON LAST LEG PERFORMED C/B RESET AND ALL DISPLAY FLAGS EXTINGUISHED. FAULTS NO LONGER ACTIVE ALL REQUIRED TESTS PASSED.