# SDR 2012FA0000550

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2012
- Submitted: August 7, 2012
- Operation: General aviation
- Aircraft: N5038F
- Make and model: Hiller 1100
- Registry model: [Hiller 1100](https://openairdocs.org/model/hiller-1100) (OpenAirDocs)
- Aircraft serial: 186
- Aircraft time: 2,250 hours
- Engine: Allsn 250C18
- Engine time: 150 hours
- System (JASC): [6510 · Tail Rotor Drive Shaft](https://openairdocs.org/jasc/6510)
- Part: Flex Coupling
- Part number: 19E1011D
- Condition: Separated
- Location: T/R Drive Shaft
- Part time: 2,250 hours
- Component: Drive Shaft
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, F
- Precautionary procedure: R, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2012FA0000550

## Discrepancy

FLEX COUPLING FAILED AT OUTPUT OF INTERMEDIATE GEARBOX.  SUBSTATIAL DAMAGE OCCURED DURING HARD LANDING.

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