# Accident 19910702025679A: Hiller UH12D, Champaign-Urban, IL, July 2, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 2, 1991, 12:00 local time
- Place: Champaign-Urban, IL
- Airport: University Of Illinois-Willar
- Damage: Substantial damage
- Phase of flight: Practice Training Manuevers
- Operating rules: General operating rules (Part 91)
- Location: 40.0598° N, 88.2509° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=40.0598&lon=-88.2509&mi=10
- Aircraft: N94515, registered now (https://openairdocs.org/aircraft/N94515) (OpenAirDocs)
- Registry model: Hiller UH-12D (registry code 4360118, https://openairdocs.org/model/hiller-uh-12d) (OpenAirDocs)
- Registry engine: Lycoming VO-435 series (registry code 41525, https://openairdocs.org/engine/lycoming-vo-435-series) (OpenAirDocs)
- Reported make and model: HILLER UH12D
- Reported engine: LYC VO435*
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 360 total, 42 in this make and model, 48 in the last 90 days
- NTSB investigation: [NTSB CHI91LA205](https://openairdocs.org/ntsb/CHI91LA205) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910702025679A

## Narrative

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

PRACTICING QUICK STOP MANEUVER. TAIL ROTOR HIT GROUND. LOST DIRECTIONAL CONTROL. SET DOWN HARD TO AVOID SPIN.

## 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 CHI91LA205](https://openairdocs.org/ntsb/CHI91LA205), Jul 2, 1991: Hiller UH-12D (N94515), Savoy, IL, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN TAIL ROTOR CLEARANCE FROM THE GROUND. A RELATED FACTOR IS THE PILOT'S LACK OF TOTAL EXPERIENCE IN HELICOPTERS.

## Other reports on N94515 (2)

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

- [Incident 19920729043869I](https://openairdocs.org/incident/19920729043869I), Jul 29, 1992: Hiller UH12D (N94515), Champaign-Urban, IL, Minor damage. While demonstrating an autorotation landing pilot landed hard. Minor damaged to tail rotor blades.
- [Incident 19801018075189I](https://openairdocs.org/incident/19801018075189I), Oct 18, 1980: Hiller UH12D (N94515), Champaign, IL, Minor damage. Za pilot demonstrating autorotation with power recovery. Tail rotor struck the ground.

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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