What was found
CAPTAIN`S FMC BRIGHTNESS DOES NOT HAVE DIM TO BRIGHT STOPS. KNOB TURNS THRU DIM TO BRIGHT TO DIM. ACFT GROUNDED. REMOVED AND REPLACED MCDU IAW AMM 34-61-01, GROUND VERIFICATION TEST PASSED.
- Difficulty date
- February 20, 2018
- Submitted
- February 23, 2018
- Operation
- Air carrier
- Aircraft
- N590AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35687
- Aircraft time
- 38,685 hours, 11,693 cycles
- System (JASC)
- 3460 · Flight Management Computing Hardware System
- Part
- Knob
- Condition
- Failed
- Location
- Fmc
- Part time
- 63,333 hours, 26,642 cycles
- 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.