# NTSB CHI84LA317: Bell 47-G2, N59H, Jeffersonville, OH, July 29, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 29, 1984, 19:15 local (23:15 UTC)
- Place: Jeffersonville, OH
- Coordinates: 39.650207, -83.549682 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.6502&lon=-83.5497&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12712
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84LA317
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12712/pdf
- Page: https://openairdocs.org/ntsb/CHI84LA317

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - rotor rpm - not maintained, pilot in command (cause)
  - tail rotor/anti-torque control - improper use of, pilot in command (cause)
  - aircraft weight and balance - disregarded, pilot in command (cause)
  - performance data - disregarded, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE ACFT STARTED TO SETTLE WITH POWER DURING TAKEOFF AFTER THE ACFT WAS LOADED WITH CHEMICALS. THE PLT SAID HE HAD A CHOICE OF, GOING THROUGH A FENCE OR OVER IT AND DECIDED TO GO OVER IT. PULLING COLLECTIVE BLED OFF M/R AND THE ACFT STOPPED FLYING. THE TAIL BOOM STRUCK THE GROUND DURING AN ATTEMPTED FLARE. THE MAIN BLADES FLEXED AND CUT OFF THE TAIL.

## Aircraft

- Registration: [N59H](https://openairdocs.org/aircraft/N59H), registered now, S/N 325, built 1951 (OpenAirDocs)
- Reported make and model: BELL 47-G2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 325
- Airframe hours: 4859
- Engines: LYCOMING VO-435-A1D 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: B & J Helicopter Service, Inc
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, September 25, 1983, 53 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,587 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 45° at 5 knots
- Visibility: 4 statute miles
- Lowest ceiling: none
- Temperature: 81 °F

## 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 19840729035849A](https://openairdocs.org/incident/19840729035849A), Jul 29, 1984: Bell 47G2, Jeffersonville, OH, Substantial damage. Entered settling with power regime during takeoff with a spray load. Lost rotor RPM trying to clear a fence.

## Other investigations on N59H (3)

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 MKC79DER70](https://openairdocs.org/ntsb/MKC79DER70), Sep 2, 1979: Bell 47G-2 (N59H), St.Peter, MN, substantial damage
- [NTSB SEA74DYC25](https://openairdocs.org/ntsb/SEA74DYC25-186907), Feb 24, 1974: Bell 47G-2 (N59H), Spokane, WA, substantial damage
- [NTSB ANC70A0006](https://openairdocs.org/ntsb/ANC70A0006), Jul 16, 1969: Bell 47G-2 (N59H), King Salmon, AK, substantial damage

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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