# SDR ASAA2022022537571

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2022
- Submitted: March 1, 2022
- Operation: Air carrier
- Aircraft: [N530AS](https://openairdocs.org/aircraft/N530AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36578
- Aircraft time: 42,114 hours, 12,262 cycles
- System (JASC): [3440 · Independent Position Determining System](https://openairdocs.org/jasc/3440)
- Part: Transceiver
- Part number: 8221710312
- Part serial: 49F5PP
- Condition: Faulted
- Location: Lower Nose Compt
- Part time: 14,722 hours, 4,525 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022022537571

## Discrepancy

WX RADAR IS DEPICTING A CONSTANT GROUP OF CELLS AT 11 O'CLOCK AND 120NM, 50NM IN DIAMETER, BUT THERE IS NO WEATHER. CELLS DO NOT MOVED. THEY SHOW IN BOTH WX AND WX+T MODES. GROUNDED - YES. UNABLE TO DUPLICATE, REMOVED & REPLACED WXR RT PRECAUTIONARY REF B737-800 AMM 34-43-41. OPS NORMAL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.