Service difficulty report · Fmc · Boeing 737990ER

Difficulty date
August 20, 2021
Submitted
August 31, 2021
Operation
Air carrier
Aircraft
N469AS
Make and model
Boeing 737990ER
Aircraft serial
41702
Aircraft time
26,591 hours, 8,570 cycles
Part
Fmc
Part number
1714970501
Part serial
0000984
Condition
Inoperative
Location
Nr 1 & 2
Part time
66,464 hours, 32,143 cycles
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ON SHORT FINAL WE RECEIVED A FMC MESSAGE "SINGLE FMC OPERATIONS" AND VTK FLAG ON FO'S ND'S. GROUNDED - YES. (RESOLVED ON W/O: 1882002 TASKCARD: N/R-00001 ) REMOVED #1, LH AND #2, RH FMCS COMPUTERS PER B737-900 AMM 34-61-02-000-801. INSTALLED #1, LH AND #2, RH FMCS COMPUTERS PER AMM 34-61-02-400-801. LOADED ALL FMCS SOFTWARE PER AMM 34-61-00-201. ACCOMPLISHED FMCS PERFORMANCE FACTORS ADJUSTMENT PER AMM 34-61-00-800-801. ACCOMPLISHED FMCS OPERATIONAL TEST PER AMM 34-61-00-710-801, OPERATIONAL TEST PASSED. A/C RELEASED FROM MEL 34-36J C/N 2105469 REMOVED. SEAMC MITCH NOTIFIED.