# Accident 19890928036999A: Hiller UH12E, Hudsonville, MI, September 28, 1989

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 28, 1989, 07:45 local time
- Place: Hudsonville, MI
- Damage: Substantial damage
- Phase of flight: Climb
- Operating rules: Agricultural (Part 137)
- Operator: BYRG
- Location: 42.8609° N, 85.8594° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=42.8609&lon=-85.8594&mi=10
- Aircraft: N4028T, a cancelled registration (https://openairdocs.org/deregistered/N4028T-1999-06-10) (OpenAirDocs)
- Registry model: Hiller UH-12E (registry code 4360122, https://openairdocs.org/model/hiller-uh-12e) (OpenAirDocs)
- Reported make and model: HILLER UH12E
- Reported engine: LYC VO540C2A
- Fatal injuries: 0
- Pilot flight hours: 8,900 total, 220 in this make and model, 120 in the last 90 days
- NTSB investigation: [NTSB CHI89DEM09](https://openairdocs.org/ntsb/CHI89DEM09) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19890928036999A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

VIBRATION ON CLIMBOUT, MAIN ROTOR SEVERED TAILBOOM. CRASHED NOSE DOWN. MAIN ROTOR TORSION PINS BROKE. PRIOR CRACKS.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CHI89DEM09](https://openairdocs.org/ntsb/CHI89DEM09), Sep 28, 1989: Hiller UH-12E (N4028T), Hudsonville, MI, substantial damage. Probable cause: THE FATIGUE FAILURE OF ONE OF THE TENSION-TORSION PINS.

## Other reports on N4028T (2)

Matched to the same aircraft by N-number and date.

- [Accident 19980602012139A](https://openairdocs.org/incident/19980602012139A), Jun 2, 1998: Hiller UH12E (N4028T), Deleaplaine, AR, Substantial damage. Acft experienced engine problems, pilot made emerg landing in the field, broke the skid, main rotor struck the grou (.4)the helicopter was traveling in an…
- [Incident 19940620029349I](https://openairdocs.org/incident/19940620029349I), Jun 20, 1994: Hiller UH12E (N4028T), Arcadis, LA, Minor damage. Tried to hover taxi with fuel hose attached to fuel tank. Made hard landing.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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