# NTSB MIA82DA174: Bell 47G-2, N366DJ, Miami, FL, August 20, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 20, 1982, 19:00 local (23:00 UTC)
- Place: Miami, FL
- Coordinates: 25.910978, -80.269256 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=25.9110&lon=-80.2693&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 20, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71681
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA82DA174
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71681/pdf
- Page: https://openairdocs.org/ntsb/MIA82DA174

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - autorotation - performed, pilot in command
  - distance - misjudged, pilot in command (cause)
  - altitude - misjudged, pilot in command (cause)

## Analysis

THE PILOT REPORTED THAT WHILE HE WAS PRACTICING AN AUTOROTATIVE LANDING, HE STARTED TO FLARE A BIT TOO HIGH. HE STATED THAT THE HELICOPTER TOUCHED DOWN HARDER THAN NORMAL AND THE MAIN ROTOR BLADES FLEXED DOWNWARD AND SWEPT ACROSS THE TAIL BOOM. SUBSEQUENTLY, THE TAIL ROTOR DRIVE SHAFT FAILED AT THE AFT END AND THE MAIN ROTOR AND TAIL ROTOR BLADES WERE DAMAGED.

## Aircraft

- Registration: [N366DJ](https://openairdocs.org/deregistered/N366DJ-2012-10-09), registration cancelled 2012-10-09, S/N 717, built 1954 (OpenAirDocs)
- Reported make and model: BELL 47G-2
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Category: Helicopter
- Serial number: 717
- Airframe hours: 6458
- Engines: LYCOMING VO-435 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Matthew A. Braun
- Registered owner: Helicopter Of Key West
- Departed: OPF, OPA LOCKA, FL
- Destination: OPF, OPA LOCKA, FL
- Airport: OPF, Opa Locka

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 3,668 total, 75 in this make and model, 112 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 5 knots
- Visibility: 6 statute miles
- Temperature: 190 °F
- Altimeter: 30.00 inHg

## 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 19820820041719A](https://openairdocs.org/incident/19820820041719A), Aug 20, 1982: Bell 47G2, Miami, FL, Substantial damage. During simulated autorotation landing helicopter hit hard causing rotor blades to cut off tail rotor drive.

## Other investigations on N366DJ (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 MIA83FA181](https://openairdocs.org/ntsb/MIA83FA181), Jul 7, 1983: Bell 47G-2 (N366DJ), Lake Worth, 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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