SDR ASAA2023052243315

Service difficulty report · Unknown · Boeing 7379

Difficulty date: May 22, 2023
Submitted: May 23, 2023
Operation: Air carrier
Aircraft: N954AK
Make and model: Boeing 7379
Aircraft serial: 44104
Aircraft time: 1,613 hours, 469 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
Stage of operation: CR
How discovered: V
Nature of condition: J
Precautionary procedure: K

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

What was found

JUST AFTER CP, WHILE ENROUTE, EXPERIENCE A DUAL FMC FAILURE. MAP DISPLAY DISAPPEARED. LNAV/VNAV DISENGAGED AND VTK FAILURE FLAG ON BOTH SIDES AFTER APPROXIMATELY 30 SECONDS, FMC WAS RESTORED ON BOTH SIDES. GROUNDED - YES. C/W OPS CHECK OF BOTH FMC'S IAW B737-9 AMM 34-61-00-710-801. OPS CHECK GOOD.

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