SDR ASAA2016120518945

Service difficulty report · Display · Boeing 737990ER

Difficulty date: December 5, 2016
Submitted: December 7, 2016
Operation: Air carrier
Aircraft: N486AS
Make and model: Boeing 737990ER
Aircraft serial: 44107
Aircraft time: 4,923 hours, 1,626 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Display
Condition: Unknown
Stage of operation: NR
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

MCDU'S NOT SHOWING CLIMB, CRUISE, AND DESCENT DATA. ACFT GROUNDED. FOUND TOTAL AIR TEMP PROBE HEAT WAS ON. TURNED OFF THE HEATER SWITCH TO INTER FMC DATA. BOTH FMC COMPUTERS TESTED IAW AMM TASK 34-61-00, ALL OPS CHECKED GOOD, NO EXISTING FAULT.