# SDR HEEA967741

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N108X
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Aircraft serial: 33115
- System (JASC): [3450 · Dependent Position Determining System](https://openairdocs.org/jasc/3450)
- Part: Control Box
- Part number: 071121004
- Condition: Failed
- Location: Cockpit
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA967741

## Discrepancy

DOES NOT CHANNEL FREQUENCIES CORRECTLY AND KNOBS CHANGE WRONG DIGITS INTERMITTENTLY. VERIFIED, CLEANED WAFERS AND CONTACTS.  NO HELP.  REPLACED SWITCH S304 AND RIVETS 2 EACH P/N 092-5009-04.  ALSO REPLACED RETAINING RING P/N 090-0036-04.  NO HELP.  REPLACED DETENT WHEEL P/N 088-0766-01.  NO HELP.

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