# NTSB ATL82DA150: Bell 47D1, N10065, Blountville, TN, May 29, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: May 29, 1982, 18:25 local (22:25 UTC)
- Place: Blountville, TN
- Coordinates: 36.5298, -82.319595 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.5298&lon=-82.3196&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report May 29, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 69987
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL82DA150
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69987/pdf
- Page: https://openairdocs.org/ntsb/ATL82DA150

## Sequence of events

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

- Loss of engine power, cruise - normal
  - engine assembly - undetermined (cause)
- Forced landing, landing - flare/touchdown
- Hard landing, landing - flare/touchdown
  - altitude - improper, pilot in command (cause)
  - autorotation - not possible, pilot in command (contributing factor)
- Airframe/component/system failure/malfunction, landing - flare/touchdown
  - rotor system,main rotor blade - bent
  - misc rotorcraft,tail boom - separation

## Analysis

THE AIRCRAFT LOST POWER AT 100 FEET ABOVE GROUND LEVEL. AN AUTOROTATION WAS ATTEMPTED TO A HIGHWAY. THE HARD LANDING RESULTED IN THE MAIN ROTOR SEVERING THE TAIL.

## Aircraft

- Registration: [N10065](https://openairdocs.org/aircraft/N10065), registered now, S/N 830, built 1949 (OpenAirDocs)
- Reported make and model: BELL 47D1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Helicopter
- Serial number: 51-14065
- Airframe hours: 46
- Engines: FRANKLIN 6V-335A 210 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Gary W. Manis
- Registered owner: Floyd Vanderpool
- Departed: TRI, TRI-CITIES, TN
- Destination: TRI, TRI-CITIES, TN
- Airport: TRI, Tri Cities

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,586 total, 86 in this make and model, 2,546 as pilot in command, 136 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 7 knots
- Visibility: 7 statute miles
- Temperature: 183 °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 19820529019639A](https://openairdocs.org/incident/19820529019639A), May 29, 1982: Bell 47D1, Blountville, TN, Substantial damage. Failed to maintain rotor speed on practice autorotation landing. Impact collapsed skids, rotor cut off tail boom.

## Other investigations on N10065 (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 MIA86LA168](https://openairdocs.org/ntsb/MIA86LA168), May 29, 1986: Bell 47-D1 (N10065), Panama City Bch, FL, 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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