# SDR UIEA2014120800643

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2014
- Submitted: December 8, 2014
- Operation: Air carrier
- Aircraft: [N418MC](https://openairdocs.org/aircraft/N418MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 32840
- Aircraft time: 50,095 hours, 7,720 cycles
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Wave Guide
- Condition: Dirty
- Location: Weather Radar
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: J, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2014120800643

## Discrepancy

AIR TURN BACK TO STATION DUE TO LT & RT RADAR SYS INOPERATIVE.  NO RETURNS ON EITHER NAV DISPLAY WITH TILT FULL DOWN & FULL GAIN IN MAX.  CLEANED & DRAINED HOLES AT WAVE GUIDE AFT OF PRESS BULKHEAD.  LT & RT RADAR SYS OPERATIONAL CHECKED SATISFACTORY IAW AMM 34-43-00.

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