SDR ASAA2019090630643

Service difficulty report · Unknown · Boeing 737990ER

Difficulty date: September 6, 2019
Submitted: September 10, 2019
Operation: Air carrier
Aircraft: N423AS
Make and model: Boeing 737990ER
Aircraft serial: 35206
Aircraft time: 25,243 hours, 8,204 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Unknown
Condition: Malfunctioned
Location: Cockpit
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

IN CRUISE AT FL 360 NEAR PIH, CAPTAINS FMC SCREEN WENT BLANK AND DISPLAYED CALL, FAIL, MSG, OFFSET, AND AND EXEC LIGHTS. AFTER APPROX 30 SECONDS, FMC SCREEN DISPLAYED "BIT PASSED" FOR APPROX 2 SECONDS, THEN NORMAL OPS RESUMED. NEITHER ND OR AUTO FLIGHT FUNCTIONS WERE AFFECTED DURING THIS ISSUE. GROUNDED - YES. ACCOMPLISHED FIM 34-61 TASK 804. OPS CHECK NORMAL REF FIM 34-61 TASK 807.