# SDR 03082006B

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2006
- Submitted: June 19, 2006
- Operation: Air carrier
- Aircraft: N339CJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 339
- Aircraft time: 25,058 hours, 31,301 cycles
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Computer
- Part number: 8542M2
- Part serial: 385
- Condition: Malfunctioned
- Location: Autocoarsen Sys
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/03082006B

## Discrepancy

AUTOCOARSEN LIGHT CAME ON DURING TAKE-OFF.  REMOVED AND REPLACED AUTOCOARSEN COMPUTER PN ON/OFF 8542M2, SN OFF 385, SN ON 387 IAW 62-22-05.  ALSO R&R AUTOCOARSEN SWITCH IAW 61-22-15 PN ON/OFF 8061, SN OFF 181, SN ON 238 AUTOCOARSEN OPS CHECK GOOD.

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