SDR ASAA2023020641862

Service difficulty report · Unknown · Boeing 737890

Difficulty date: February 6, 2023
Submitted: February 8, 2023
Operation: Air carrier
Aircraft: N559AS
Make and model: Boeing 737890
Aircraft serial: 35178
Aircraft time: 56,992 hours, 16,820 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
Stage of operation: NR
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

VTK AND MAP FAILURE FLAGS DISPLAYED ON CAPTAINS NAVIGATION DISPLAY. FMC FAIL CHECKLIST ACCOMPLISHED. FMC SOURCE SELECT SWITCH REPOSITIONED TO BOTH ON R. NO BEARING OR DISTANCE INFORMATION DISPLAYED FOR FMC-L ON POS SHIFT. PAGE. GROUNDED - YES. FMC SWITCH REPOSITIONED TO NORMAL POSITION. REALIGNED L-R ADIRUS. PERFORMED FMCS BITE. NO FAULTS AT THIS TIME. REF B737-800 FIM 34-61 TASK 801 AND B737-800 AMM 34-61-00-860-801.