SDR ASAA2021070335237

Service difficulty report · Display · Boeing 737890

Difficulty date: July 3, 2021
Submitted: July 7, 2021
Operation: Air carrier
Aircraft: N513AS
Make and model: Boeing 737890
Aircraft serial: 35192
Aircraft time: 45,734 hours, 13,489 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Display
Condition: Malfunctioned
Location: First Officer'S
Stage of operation: DE
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

ON DESCENT FO PFD SHOWED VTK TWICE FOR LESS THAN 60 SECONDS. SECOND EVENT CAUSED BRIEF FMC SINGLE OPERATION THEN RETURNED TO NORMAL BEFORE QRH RUN. ON APPROACH LATERAL FLIGHT PATH WAS 0.16 - 0.20 MILES EAST OF CORRECT/AIRCRAFT/GROUND BASED DATA. AFTER LANDING VTK APPEARED ON CAPTAINS PFD FOR 10 - 15 SECONDS & CLEARED. NOTE: VERTICAL VNAV GUIDANCE DROPPED OFF AS WELL AT 1000' AGL. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 34-61 TASK 836. OPS CK GOOD. A/C OK FOR SVC.