# SDR 2000UALA00116

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2000
- Submitted: October 4, 2000
- Operation: Air carrier
- Aircraft: [N651UA](https://openairdocs.org/aircraft/N651UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25389
- Aircraft time: 34,967 hours, 5,499 cycles
- Engine: Pwa PW4060
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Transceiver
- Part number: 6225125001
- Condition: Failed
- Location: Radar
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2000UALA00116

## Discrepancy

AIRCRAFT RETURNED TO EZE DUE TO RADAR PROBLEMS.  *S/D*  THE WEATHER RADAR RECEIVER/TRANSMITTER AND ANTENNA DRIVE UNIT WERE REPLACED AND THE SYSTEM OPERATION RETURNED TO NORMAL.  SHOP CHECKOUT OF THE REMOVED UNITS FOUND THAT THERE WERE NO FAULTS WITH THE RECEIVER TRANSMITTER BUT THE ANTENNA DRIVE UNIT (P/N 622-5125-001), WAS FOUND TO HAVE THE AZIMUTH FAILED AND LOCKED AND THEREFORE WAS THE CAUSE OF THE RADAR SYSTEM FAILURE ON AIRCRAFT 6651.

---
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.