SDR ASAA2021093036153

Service difficulty report · Unknown · Boeing 737890

Difficulty date: September 30, 2021
Submitted: October 4, 2021
Operation: Air carrier
Aircraft: N563AS
Make and model: Boeing 737890
Aircraft serial: 35180
Aircraft time: 54,166 hours, 16,011 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Unknown
Part number: UNKNOWN
Condition: Unknown
Location: Unknown
Stage of operation: DE
How discovered: V
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

FMC DISAGREE-VERTICAL MESSAGE PRIOR TO TOP OF DESCENT. UPON DESCENDING VERTICAL PROFILE BOTH SIDES APPEARED THE CAM. RAN QRH, MESSAGE DID NOT RETURN. GROUNDED - YES. RAN B737-800 FIM 34-61 TASK 835, NO FAULT NOTED, CLEAN HISTORY, NO EXISTING FAULTS. A/C OK FOR CONTINIOUS SERVICE.