# SDR 0212271

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2002
- Submitted: December 31, 2002
- Operation: Air carrier
- Aircraft: N35SZ
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: 35
- Aircraft time: 34,229 hours, 39,918 cycles
- Engine: Ge CT75A2
- Engine time: 29,088 hours, 30,440 cycles
- Propeller: Rotol R3894123F25
- System (JASC): [6122 · Propeller Governor](https://openairdocs.org/jasc/6122)
- Part: Bulb
- Part number: 387
- Part serial: NA
- Condition: Inoperative
- Stage of operation: TO
- How discovered: V
- Nature of condition: S
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/0212271

## Discrepancy

Flight 4456 TTN-BED. Autocoarsen failed to arm on take off. R&R'd anunciator bulbs. Lamp test good. Performed Autocoarsen test IAW SF 340A AMM 61-22-00-5. Ops check good.

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