# SDR HEEA072366

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2001
- Submitted: May 7, 2001
- Operation: General aviation
- Aircraft: N3911L
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 33023
- Aircraft time: 19,250 hours
- System (JASC): [3442 · Weather Radar System](https://openairdocs.org/jasc/3442)
- Part: Radar
- Part number: MI5852013
- Part serial: 3233
- Condition: Failed
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA072366

## Discrepancy

BLANK SCREEN. PERFORMED PRELIMINARY INSPECTION. FOUND UNIT DRAWS EXCESSIVE CURRENT.  REPLACED Q4204, Q4205 TRANSISTORS ON POWER SUPPLY.  REPAIRED.  FOUND RED AND YELLOW COLORS IN NOISE BAND.  REPLACED IC U1402, U1403, U1406.  REPAIRED.  BENCH CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.