# SDR 98ZZZX861

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N815AS](https://openairdocs.org/aircraft/N815AS), registered now
- Make and model: Bag BAE146200A
- Aircraft serial: E2084
- System (JASC): [3445 · Air Collision Avoidance System](https://openairdocs.org/jasc/3445)
- Part: Relay
- Part number: M3901661052
- Condition: Malfunctioned
- Location: Tcas System
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX861

## Discrepancy

THE FOLLOWING WAS FOUND DURING FUNCTIONAL TEST OF TCAS DURING AIRCRAFT INSPECTION.  COULD NOT OBTAIN CLIMB ADVISORY ON TCAS. TROUBLESHOT AND FOUND THAT CLIMB INHIBIT WAS ACTIVATED DUE TO 2 EACH RELAYS INOP (COILS OPEN).  ONE RELAY IS LOCATED AT 3440-K1 AND THE OTHER IS LOCATED AT 3440-K2.  CONFIRMED PROPER OPERATION IN CLIMB INHIBIT MODE.  REPLACED BOTH RELAYS AND OPERATIONAL TEST PERFORMED GOOD.  NOTE:  TCAS INDICATOR DOES NOT DISPLAY CLIMB INHIBIT MODE AT ANY TIME AS NORMAL OPERATION.

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