# SDR ASAA2020061872806

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2020
- Submitted: June 22, 2020
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 51,782 hours, 15,452 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Antenna
- Part number: 6225135822
- Part serial: 40F4C7
- Condition: Failed
- Location: Wx Radar Sys
- Part time: 24,965 hours, 7,385 cycles
- Stage of operation: CL
- How discovered: V
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020061872806

## Discrepancy

PWS FAIL ANNUNCIATED AFTER TAKEOFF. TURNED OFF WXR AND THEN HEARD & FELT GRINDING CYCLIC NOISE. TURNED OFF WXR, MOMENTARILY WXR FAIL ANNUNCIATED. GROUNDED - YES. DIVERSION TIME 35 MINUTES - REMOVED AND REPLACED WXR ANTENNA DRIVE UNIT, WXR OPS TEST OK REF B737-800 AMM 34-43-11. ETOPS GROUND VERIFICATION SUCCESSFUL.

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