SDR ASAA2017061121043

Service difficulty report · Fmc · Boeing 737890

Difficulty date: June 11, 2017
Submitted: June 13, 2017
Operation: Air carrier
Aircraft: N581AS
Make and model: Boeing 737890
Aircraft serial: 35188
Aircraft time: 38,373 hours, 11,553 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Right
Stage of operation: CR
How discovered: O
Nature of condition: N
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 FLIGHT, FIRST OFFICER`S CDU DISPLAYED VTK WITH FMC CAUTION LIGHT ON FWD PANEL. VNAV DISCONNECTED AS WELL AS LNAV. FOLLOWED QRH PROCEDURES FOR FMC FAIL RIGHT. FMC RT DID RESTORE AFTER 2 MINUTES. ACFT GROUNDED. PERFORMED FIM 34-61, TASK 801, RIGHT FMC LOGGED 1 FAULT LAST FLIGHT, PRES POS LAT RATE. PERFORMED FIM 34-61, TASK 836, STEP E, CYCLED FOUR CIRCUIT BREAKERS. FMC OPS TEST NORMAL IAW AMM 34-61-00. GROUND VERIFICATION NORMAL.