SDR ASAA2014041107522

Service difficulty report · Fmc · Boeing 737890

Difficulty date: April 11, 2014
Submitted: April 15, 2014
Operation: Air carrier
Aircraft: N566AS
Make and model: Boeing 737890
Aircraft serial: 35182
Aircraft time: 28,022 hours, 8,471 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: CR
How discovered: O
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

DURING CRUISE, NR 1 FMC KEYPAD LOCKED UP ON LEGS PAGE, UNABLE TO CHANGE FMC PAGES OR INPUT DATA VIA NUMERICAL KEYS, ALL LEGS PAGE DATA WAS NORMAL COMPARED TO NR 2 FMC AFTER 15 MIN, KEYPAD FUNCTIONALITY RETURNED TO NORMAL, NO OTHER ISSUES. ACFT GROUNDED. ACCOMPLISHED FIM TASK 34-61-802. OPS RESTORED, GROUND VERIFICATION CK OK.