# SDR ASAA2023030242185

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2023
- Submitted: March 6, 2023
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 34,606 hours, 10,952 cycles
- System (JASC): [3440 · Independent Position Determining System](https://openairdocs.org/jasc/3440)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023030242185

## Discrepancy

PWS FAIL MESSAGE ON NAV DISPLAY, CLEARED ON LANDING. GROUNDED - YES. FOLLOWED PREDICTIVE WINDSHEAR SYSTEM B737-900 FIM 34-43 TASK 815. PERFORMED INITIAL EVALUATION WEATHER RADAR BITE FIM 34-43 TASK 801 BITE CHECK PASSED.

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