# SDR 9JLA2022051330481

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2022
- Submitted: May 13, 2022
- Operation: Air carrier
- Aircraft: [N561MT](https://openairdocs.org/aircraft/N561MT), registered now
- Make and model: Cessna 560CESSNA
- Aircraft serial: 5600122
- Aircraft time: 8,642 hours, 7,882 cycles
- System (JASC): [3444 · Ground Proximity System](https://openairdocs.org/jasc/3444)
- Part: Radio Altimeter
- Part number: 6222855001
- Part serial: 7716
- Condition: Inoperative
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2022051330481

## Discrepancy

THE FLIGHT CREW REPORTED A GPWS WARNING DURING LOW ALTITUDE FLIGHT. ALL WARNING ILLUMINATED AFTER TAKE-OFF AND ON APPROACH TO LANDING. THE MAINTENANCE VENDOR TROUBLESHOT AND REPLACED THE RIGHT RADIO ALT UNIT WITH A TESTED STATUS UNIT. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.

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