# NTSB BFO92LA139: Enstrom F-28A, N950SC, Shelbyville, KY, September 13, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 13, 1992, 13:00 local (17:00 UTC)
- Place: Shelbyville, KY
- Coordinates: 38.209331, -85.230194 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.2093&lon=-85.2302&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 30, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 11849
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=BFO92LA139
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/11849/pdf
- Page: https://openairdocs.org/ntsb/BFO92LA139

## Probable cause

AN IMPROPER FLARE MADE BY THE PILOT RESULTING IN A HARD LANDING AND MAIN ROTOR BLADE TAIL BOOM STRIKE.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Hard landing, landing - flare/touchdown
  - flare - improper, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)

## Analysis

DURING CRUISE, THE PILOT THOUGHT THE HELICOPTER'S ENGINE WAS MALFUNCTIONING SO HE MADE A PRECAUTIONARY LANDING. DIRECTIONAL CONTROL WAS NOT MAINTAINED DURING THE LANDING WHICH RESULTED IN A HARD LANDING AND SUBSEQUENT MAIN ROTOR BLADE TAIL BOOM STRIKE.  THE ON SCENE INVESTIGATION DID NOT REVEAL ANY MECHANICAL MALFUNCTIONS OR HELICOPTER ANOMALIES.

## Aircraft

- Registration: [N950SC](https://openairdocs.org/deregistered/N950SC-2012-12-11), registration cancelled 2012-12-11, S/N 318, built 1975 (OpenAirDocs)
- Reported make and model: ENSTROM F-28A
- Registry model: [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a) (registry code 3300406) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 318
- Engines: LYCOMING HIO-360-C1A 205 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Not Registered
- Last inspection: Unknown, January 2, 2000
- Departed: TAYLORSVILLE, KY

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 4 knots
- Visibility: 6 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 75 °F, dew point 63 °F
- Altimeter: 30.00 inHg
- Observed at: LOU, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19920913036529A](https://openairdocs.org/incident/19920913036529A), Sep 13, 1992: Enstrm F28A, Shelbyville, KY, Substantial damage. Believed engine problem. Made hard impact in a field on precautionary landing. None found. No license or medical.

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.

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