# SDR ASAA2021042234653

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 22, 2021
- Submitted: April 26, 2021
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 21,248 hours, 6,797 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Radar
- Condition: Malfunctioned
- Location: Wx System
- Stage of operation: NR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021042234653

## Discrepancy

WEATHER RADAR SHOWING FALSE RETURN +_ 3 DEGREE EITHER SIDE OF AIRCRAFT TRACK EXTENDS APPROXIMATELY 60 MILES ON NAV DISPLAY. GROUNDED - YES. PERFORMED WXR RADAR SYSTEM BITE PROCEDURE NO FAULT NOTED B737-900 FIM 34-43 TASK 801, WXR RADAR SYSTEM OPS TEST PASSED B737-900 AMM 34-43-00-710-802-001, UNABLE TO DUPLICATE DEFECT.

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