SDR ASAA2022083039713

Service difficulty report · Cdu · Boeing 737990ER

Difficulty date: August 30, 2022
Submitted: August 31, 2022
Operation: Air carrier
Aircraft: N483AS
Make and model: Boeing 737990ER
Aircraft serial: 36350
Aircraft time: 25,932 hours, 8,154 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Cdu
Part number: 1741010303
Part serial: 004823
Condition: Inoperative
Location: Flight Deck
Part time: 25,932 hours, 8,154 cycles
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

F/O FMC BUTTONS: DEP ARR, HOLD, ATC, FMC COM, VNAV,PROG, EXEC, #7,8,9, B-E, F-J, L-O,Q-T,U-Y, SPACE & SLASH DO NOT WORK. GROUNDED - YES. REMOVED AND REPLACED F/O'S FMC CDU REF B737-900 AMM 34-61-01, OPS CHECK GOOD. CDU SOFTWARE CONFIGURATION CHECK COMPLIED WITH REF AMM 34-61-00.