# SDR 96ZZZX3730

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Bell 206B
- Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (OpenAirDocs)
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Compressor
- Part number: JBS2201
- Condition: Interference
- Location: Cooling  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/96ZZZX3730

## Discrepancy

BHT 206, TH-67 IFR AIRCRAFT WITH ENVIRONMENTAL COOLING SYSTEM OPERATING, WHEN THE HSI IS IN 'SLAVE' POSITION, THE HSI NEEDLE DRIFTS 4 TO 6 DEGREES.  SUSPECT EMI FROM ENVIRONMENTAL COOLING SYSTEM COMPRESSOR CLUTCH ASSEMBLY.  SUBMITTER STATES THE INTERFERENCE IS OCCURRING ON ALL 206B SERIES ROTORCRAFT.

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