SDR IPXA2019100747652

Service difficulty report · Fmc · Boeing 75724APF

Difficulty date: October 4, 2019
Submitted: October 9, 2019
Operation: Air carrier
Aircraft: N457UP
Make and model: Boeing 75724APF
Aircraft serial: 25478
Aircraft time: 30,992 hours, 18,548 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Failed
Location: Cockpit
Stage of operation: CR
How discovered: O
Nature of condition: P
Precautionary procedure: A

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

What was found

ENROUTE, CREW REPORTED DUAL FMC FAILURE WITH NO ROUTE DISPLAYED ON EITHER NAV. CREW DECLARED EMERGENCY, DIVERTED. THE FLIGHT LANDED WITHOUT INCIDENT. CHECKED BOTH FMC WIRING IAW WDM. FOUND DIRTY CONNECTORS, CLEANED AND PERFORMED FMC BITE PROCEDURE PER FIM. OPS CHECKED GOOD.

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