# SDR ASAA2020012201928

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2020
- Submitted: January 23, 2020
- Operation: Air carrier
- Aircraft: [N590AS](https://openairdocs.org/aircraft/N590AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35687
- Aircraft time: 45,888 hours, 13,786 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Drive Unit
- Part number: 6225135822
- Part serial: 40F4C7
- Condition: Failed
- Location: Wx Radar Antenna
- Part time: 24,708 hours, 7,300 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020012201928

## Discrepancy

CAPT'S ND:  WXR FAIL ANNUNCIATED IN WX & WX+T MODES.  FAILURE APPEARS INTERMITTENT.  GROUNDED - YES. REMOVED & REPLACED THE WX RADAR R/T AND ANTENNA DRIVE UNIT IAW AMM 34-43-41 AND AMM 34-43-11, OPS NORMAL IAW AMM 34-43-00.  GND VERIFICATION SUCCESSFUL.

---
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.