SDR ASAA2022100840205

Service difficulty report · Fms · Boeing 7379

Difficulty date: October 8, 2022
Submitted: October 10, 2022
Operation: Air carrier
Aircraft: N935AK
Make and model: Boeing 7379
Aircraft serial: 44077
Aircraft time: 1,878 hours, 562 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fms
Part number: UNKNOWN
Condition: Warning Light
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

AT CRUISE FL360 VTK APPEARED ON FO'S NAV DISPLAY. LNAV DISENGAGED AND AUTOPILOT WENT INTO CWS. AFTER 30 SECONDS, VTK CLEARED AND RESUMED NORMAL OPS. GROUNDED - YES. PER B737-9 IFIM 31-00-00-810-803, OMF IFDE LOGGED MSG FO VTK FLAG 34-69002. REF IFIM 34-61-00-810-837, VERIFIED OMF FDE MSG 34-69002 NOT ACTIVE. CONFIRMED FMCS SENSOR STATUS PAGE OK.

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