SDR ASAA2021012333934

Service difficulty report · Display · Boeing 737990ER

Difficulty date: January 23, 2021
Submitted: January 26, 2021
Operation: Air carrier
Aircraft: N409AS
Make and model: Boeing 737990ER
Aircraft serial: 41733
Aircraft time: 29,216 hours, 9,448 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Display
Part number: 1741010303
Part serial: 002058
Condition: Inoperative
Location: Flight Deck
Part time: 29,214 hours, 9,447 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.

What was found

CAPT SIDE MCDU MALFUNCTIONING, EXEC BUTTON DOES NOT EXECUTE. IN ACARS AOC MENU BUTTONS 1RT, 2R, 3R NOT FUNCTIONING PROPERLY THEY BRING UP WRONG MENU PAGE. GROUNDED-YES. VERIFIED DEFECT. REMOVED & REPLACED CAPT MCDU, VERIFIED SOFTWARE P/N, INSTALLATION TEST GOOD, REF B737-900 AMM 34-61-01/401.