# SDR DXTAT2PL6D005C13L

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2017
- Submitted: August 31, 2017
- Operation: Air carrier
- Aircraft: [N770QS](https://openairdocs.org/aircraft/N770QS), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20543
- Aircraft time: 2,690 hours, 1,615 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Altimeter
- Condition: Malfunctioned
- Location: Radar
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTAT2PL6D005C13L

## Discrepancy

AT 13000 MSL, 280 KIAS, WARNING AURAL GEAR,  RED GEAR UNSAFE UP ILLUMINATED.. WARNING STOPPED AFTER 3 MINUTES,  10 MINUTES LATER AT 3000 MSL WARNING REOCCURRED.  WHEN GEAR WAS PLACED DOWN ALL INDICATIONS WERE NORMAL.  TROUBLESHOT TO A FAULTY RADAR ALTIMETER SYSTEM.  REMOVED BOTH SUSPECT DEFECTIVE RADAR ALTIMETER ANTENNAS AND REPLACED WITH NEW.  ANTENNA R & R PERFOMED IAW AMM 34-44-09.  REMOVED SUSPECT RADAR ALTIMETER TRANSCEIVER IAW AMM 34-44-01.  INSTALLED AN OVERHAULED REPLACEMENT RADAR ALTIMETER TRANSCEIVER IAW AMM 34-44-01.  OPS CHECKED OF THE RADAR ALTIMETER SYSTEM SATISFACTORY WITH NO FURTHER DEFECTS NOTED.

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