What was found
MCP ALTITUDE DISPLAY SHOWS AN APPARENT MINUS (-) SIGN. PFD DISPLAYS NORMAL. GROUNDED - YES. ON DEFERRAL.
- Difficulty date
- May 4, 2019
- Submitted
- May 8, 2019
- Operation
- Air carrier
- Aircraft
- N492AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44110
- Aircraft time
- 13,834 hours, 4,574 cycles
- System (JASC)
- 2210 · Autopilot System
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Cockpit
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.