# SDR 95ZZZX2135

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N4UV
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 33199
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Switch
- Part number: 214175122111
- Condition: Defective
- Location: Press-To-Test
- Stage of operation: IN
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX2135

## Discrepancy

IN THE TEST MODE OF THE CAUTION PANEL, NONE OF THE CAUTION LIGHTS ILLUMINATE EXCEPT FOR THE CAUTION PANEL LIGHT.  WHEN AN ACTUAL MALFUNCTION EXISTS. GET LIGHT AND A MASTER CAUTION LIGHT.  EVERYTHING WORKS NORMALLY EXCEPT FOR THE PRESS-TO-TEST-MODE.  SUSPECT CAUSE:  INTERNAL FAILURE OF PRESS-TO-TEST CIRCUITRY.

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