# SDR ASAA2018072225482

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2018
- Submitted: July 25, 2018
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 21,181 hours, 6,915 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Drive Unit
- Part number: 6225135822
- Part serial: 414XR8
- Condition: Failed
- Location: Radome
- Part time: 16,223 hours, 4,779 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018072225482

## Discrepancy

WX RADAR PAINTS GROUND IN AUTO. IN ALL FLIGHT PHASES. GROUNDED - YES. REMOVED AND REPLACED ANTENNA DRIVE UNIT REF AMM 34-43-11/401. OPERATIONAL TEST AND SYSTEM TEST PASS REF AMM 34-43-00/501.

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