SDR ASAA2018061195003

Service difficulty report · Fmc · Boeing 737900ER

Difficulty date: June 9, 2018
Submitted: June 11, 2018
Operation: Air carrier
Aircraft: N403AS
Make and model: Boeing 737900ER
Aircraft serial: 41730
Aircraft time: 22,279 hours, 7,324 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
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

WHILE AT FL370, RIGHT FMC FAILED FOR LESS THAN ONE MINUTE AND RETURNED TO NORMAL. VTK AND MAP FAILURE FLAGS APPEARED ON COPILOTS NAV DISPLAY. SINGLE FMC OPERATION SCRATCHPAD MESSAGE APPEARED AS WELL. ACFT GROUNDED. INTERMITTENT FAULT. OPS NORMAL IAW FIM 34-61TASK 801, AND AMM 34-61-00.

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