# SDR HEEA071980

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2001
- Submitted: April 18, 2001
- Operation: General aviation
- Aircraft: N2261D
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 33076
- Aircraft time: 19,281 hours
- System (JASC): [3452 · ATC Transponder System](https://openairdocs.org/jasc/3452)
- Part: Transponder
- Part number: 066104100
- Part serial: 3961
- Condition: Inoperative
- Location: Atc
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA071980

## Discrepancy

NO TRANSMIT OR RECEIVE. PERFORMED PRELIMINARY INSPECTION, TESTED UNIT, FOUND WOULD NOT POWER UP.  FUSE BAD.  ALSO TROUBLESHOT UNIT DUE TO FUSE SHORTED AND FOUND TRANSISTOR Q101 BAD.  INSTALLED FUSE AND TRANSISTOR Q101.  TESTED UNIT AND FOUND SHIELD IN POWER SUPPLY SHORTED. ALIGNED UNIT.  BENCH CHECK GOOD.

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