What was found
LNAV AND VNAV WILL NOT ENGAGE WITH EITHER FLIGHT DIRECTORS. GROUNDED - YES. CYCLED POWER ON AIRCRAFT PER AMM 20-60-99. LNAV AND VNAV NOW OPERATE NORMALLY PER PILOT PREFLIGHT CHECK.
- Difficulty date
- May 3, 2019
- Submitted
- May 6, 2019
- Operation
- Air carrier
- Aircraft
- N517AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35197
- Aircraft time
- 39,726 hours, 11,717 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- AP
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.