# NTSB CHI86FEX10: Bell 206L-II, N1084L, Kokomo, IN, July 7, 1986

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: July 6, 1986, 19:30 local (Jul 7, 1986, 00:30 UTC)
- Place: Kokomo, IN
- Coordinates: 40.529571, -86.169097 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.5296&lon=-86.1691&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 13352
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI86FEX10
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13352/pdf
- Page: https://openairdocs.org/ntsb/CHI86FEX10

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
- Loss of control - in flight, landing - flare/touchdown
  - hydraulic system,pump - failure,total (cause)
  - flight control system - movement restricted
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE HELICOPTER EXPERIENCED A LOSS OF POWER DURING CRUISE, FOR UNDETERMINED REASONS, AND WAS FORCED TO MAKE AN EMERGENCY LANDING. PRIOR TO TOUCHDOWN THE HELICOPTER EXPERIENCED A LOSS OF DIRECTIONAL CONTROL, DUE TO A FAILED HYDRAULIC PUMP, AND COLLIDED WITH THE TERRAIN.

## Aircraft

- Registration: N1084L (not matched to a registry record)
- Reported make and model: BELL 206L-II
- Category: Helicopter
- Serial number: 45722
- Airframe hours: 453
- Engines: ALLISON 250-C20B 500 horsepower turbo shaft
- Damage: Destroyed
- Flight: Positioning, Part 91
- Operator: National Air Charter, doing business as Roto-Whirl, Inc.
- Registered owner: Prestige Aviation, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, June 10, 1986, 39 hours before
- Departed: OKK, KOKOMO, IN

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 3,556 total, 60 in this make and model, 3,300 as pilot in command, 81 in the last 90 days, 47 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 15 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 93 °F, dew point 72 °F
- Altimeter: 30.00 inHg
- Observed at: GUS, 12 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 19860706030149A](https://openairdocs.org/incident/19860706030149A), Jul 6, 1986: Bell 206L1, Kokomo, IN, Destroyed. Pilot unable to control helicopter in autorotation. Hydraulic pump internally scored. Air in fuel caused flameout

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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