SDR ASAA2020071302888

Service difficulty report · Fmc · Boeing 737900ER

Difficulty date: July 10, 2020
Submitted: July 13, 2020
Operation: Air carrier
Aircraft: N407AS
Make and model: Boeing 737900ER
Aircraft serial: 41731
Aircraft time: 29,638 hours, 9,379 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Nr 1
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

DURING FLIGHT, VTK APPEARED ON CAPTAIN'S PFD AND FMC FUNCTIONALITY WAS LOST. THE SYSTEM APPEARED TO RESOLVE ITSELF BEFORE WE COULD TAKE ANY ACTION. GROUNDED - YES. NR 1 FMC REQUIRED REBOOT REF. B737-900 FIM 34-61 TASK 837 NORM OPS RESTORED. NR 1 FMC BITE TEST OK.

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