What was found
CAPTAINS NAVIGATION DISPLAY DEPICTS ERRONEOUS GREEN BAND OF WX RADAR RETURNS FROM APPROXIMATELY 80-160-NM IN BOTH AUTO AND MANUAL MODES. ERRONEOUS DISPLAY IS NOT AFFECTED BY CHANGING SCALE. GROUNDED - YES. ON DEFERRAL.
- Difficulty date
- June 24, 2023
- Submitted
- June 29, 2023
- Operation
- Air carrier
- Aircraft
- N558AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35177
- Aircraft time
- 60,751 hours, 17,928 cycles
- System (JASC)
- 3440 · Independent Position Determining System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.