Service difficulty report · Fmc · Boeing 737890

Difficulty date
February 9, 2018
Submitted
February 12, 2018
Operation
Air carrier
Aircraft
N514AS
Make and model
Boeing 737890
Aircraft serial
35193
Aircraft time
35,824 hours, 10,785 cycles
Part
Fmc
Part number
1762000101
Part serial
003945
Condition
Faulted
Location
Nr 1
Part time
35,829 hours, 10,787 cycles
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

FMC MASTER CAUTION FOLLOWED BY LEFT VTK & MAP FLAGS. ACCOMPLISHED QRH, LEFT FMC DID NOT RECOVER. ACFT GROUNDED. LEFT FMC LOGGED THE FOLLOWING FAULTS. FLTS 1, 2, 3, & 5. FMCL, GLITCH TIMER, FMCR- PRES POS LAT - RATE FMC R, PROG PINS , NAVDB, PERF DEFAULTS, ACARS DB, MODEL LENS DB, SWITCH OPTIONS, PERF FACTORS, ALL MISMATCH, FMC R ALREADY. FMC NR 2 FFR LOGGED FLT1, FMC-L PRES POS LAT (RATE) FMC L ALREADY SINGLE, FMC L RESYNC. FMC NR 2 FLT FFR LOGGED, FMC LT PRES POS LAT RATE, ARE FMC L ALREADY SINGLE. FMC NR 2 FLT 3 FFR LOGGED FMCL PRES POS LAT. (RATE). FMCL ALREADY SINGLE. FLT 5 SAME AS FLT 3. REMOVED AND REPLACED THE NR 1 FMC IAW AMM 34-61-02-400-801. LOADED OPS SOFTWARE TO NR 1 FMC IAW AMM 34-61-00-470-805. PERFORMED RIGHT TO LEFT FMC CROSSLOAD OF REMAINING SOFTWARE AND NAV DATA BASE IAW AMM 34-61-00-470-806. PERFORMED FMCS NR 1 PERFORMANCE FACTORS - ADJUSTMENT, IAW 34-61-00-800-801 . PERFORMED FLIGHT MANAGEMENT COMPUTER SYSTEM, OPS TEST IAW 34-61-00-710-801. OPS CHECKED GOOD.