# SDR ASMF201503009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2015
- Submitted: March 4, 2015
- Operation: Air carrier
- Aircraft: N520AM
- Make and model: Boeing 737-81Q
- Registry model: [Boeing 737-81Q](https://openairdocs.org/model/boeing-737-81q) (OpenAirDocs)
- Aircraft serial: 29052
- Aircraft time: 45,598 hours, 16,407 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Drive Unit
- Part number: 20414440401
- Part serial: DAA4A09655
- Condition: Failed
- Location: Weather Radar
- Part time: 19,092 hours, 12,853 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASMF201503009

## Discrepancy

AIRCRAFT RETURNED TO PLATFORM DUE TO DURING TAXING, THE EICAS MSG WXR FAIL WAS SHOWN.  DURING MX REVISION, THE TRANSCEIVER & RADAR WERE DETECTED FAILED IAW AMM 34-42-00.  THE WEATHER RADAR ANTENNA DRIVE UNIT WAS REPLACED IAW AMM 34-43-00 & AMM 34-43-11, TESTED CORRECT.

---
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.