# SDR 040604

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2004
- Submitted: April 6, 2004
- Operation: General aviation
- Aircraft: [N30HF](https://openairdocs.org/aircraft/N30HF), registered now
- Make and model: Beech C90
- Registry model: [Beech C90](https://openairdocs.org/model/beech-c90) (OpenAirDocs)
- Aircraft serial: LJ506
- Engine: Pwa PT6A20
- System (JASC): [1430 · Fasteners](https://openairdocs.org/jasc/1430)
- Part: Bolt
- Part number: MS9714XX
- Condition: Damaged
- Location: Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/040604

## Discrepancy

THE ENGINE WAS SPLIT AT THE (C) FLANGE.  AFTER REMOVAL OF THE C.T. DISC, IT WAS NOTED THAT 2 BOLTS HOLDING THE INNER EXIT DUCT TO THE ENGINE HAD SHEARED OFF AND WERE LODGED IN THE AREA, WITH THE REMAINDER OF THE BOLT SHANKS LEFT IN THE BOLT HOLES.  DAMAGE WAS NOTED ON THE C.T. DISC.  SAFETY WIRE WAS PRESENT IN ALL THE BOLTS INCLUDING THE SHEARED BOLT HEADS.

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