# SDR 97ZZZX2686

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N960CP](https://openairdocs.org/aircraft/N960CP), registered now
- Make and model: Cessna 550
- Registry model: [Cessna 550](https://openairdocs.org/model/cessna-550) (OpenAirDocs)
- Aircraft serial: 5500313
- System (JASC): [3445 · Air Collision Avoidance System](https://openairdocs.org/jasc/3445)
- Part: Tcas Unit
- Part number: CAS67A
- Condition: Malfunction
- Location: Cockpit
- Stage of operation: CR
- Nature of condition: N
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX2686

## Discrepancy

PILOT DEVIATED FROM ASSIGNED ALTITUDE OF FL 330 AFTER HE APPARENTLY RECEIVED A SECOND RA VERBAL ALERT TO DESCEND WHILE APPROACHING ANOTHER AIRCRAFT AT ASSIGNED ALTITUDE OF FL 310.  PILOT SAID HE HAD TCAS II UNIT CHECKED AT A REPAIR STATION AND UNIT CHECKED GOOD.  AN ALLIED SIGNAL REPRESENTATIVE COULD FIND NO DEFECTS AFTER INSPECTING THE AIRCRAFT AND TCAS II UNIT.  PILOT OF THE OTHER AIRCRAFT DID NOT HAVE A TCAS RA ALERT.  ALLIED SIGNAL REPRESENTATIVE AT OLATHE, KS AND RESPECTIVE FAA MIDO OFFICE HAS BEEN CONTACTED ABOUT THIS INCIDENT.  ATC DOCUMENTATION IS BEING FORWARDED TO THE RESPONSIBLE MIDO OFFICE.

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