# NTSB NYC87FA039: Bell 47-G2A, N7579, Jamesburg, NJ, November 28, 1986

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: November 28, 1986, 09:10 local (14:10 UTC)
- Place: Jamesburg, NJ
- Location: 40.3490° N, 74.4402° W: Placed by OpenAirDocs: center of Jamesburg, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.3490&lon=-74.4402&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 30477
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC87FA039
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/30477/pdf
- Page: https://openairdocs.org/ntsb/NYC87FA039

## Sequence of events

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

- Loss of control - on ground/water, hover
  - rotorcraft flight control system,cyclic trim - incorrect (contributing factor)
  - cyclic - not understood, dual student (cause)
  - overconfidence in personal ability, dual student
  - insuff standards/requirements,operation/operator, company/operator mgmt
  - supervision - not maintained, pilot in command(cfi) (cause)
  - remedial action - not maintained, dual student (cause)
  - directional control - not maintained, dual student (cause)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command(cfi) (cause)
- Roll over, hover

## Analysis

THE CFI AND PRIVATE STUDENT WERE PRACTICING LIFTING OFF TO A HOVER. THE CFI ALLOWED THE STUDENT TO PREFORM ONE OR TWO UNDER SUPERVISION AND THEY WERE SATISFACTORY. THE CFI THEN ALLOSED THE STUDENT TO START PREFORMING THE MANUEVERS. THE CFI HEARD THE RIGHT SKID SNAP AND AS HE WAS ATTEMPTING TO APPLY LEFT CYCLIC AND LOWER THE COLLECTIVE THE HELICOPTER ROLLED OVER AND WAS DESTROYED BY FIRE, BOTH CFI AND STUDENT SUFFERED BURNS.

## Aircraft

- Registration: [N7579](https://openairdocs.org/aircraft/N7579), registered now, S/N 2659, built 1961 (OpenAirDocs)
- Reported make and model: BELL 47-G2A
- Registry model: [Bell 47G-2A](https://openairdocs.org/model/bell-47g-2a) (registry code 1181012) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Serial number: 2659
- Airframe hours: 6512
- Engines: LYCOMING VO435-A1F 260 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Instructional, Part 91
- Registered owner: Cordoba Helicopter Enterprise
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 20, 1986, 15 hours before
- Departed: HIGHTSTOWN, NJ
- Destination: HIGHTSTOWN, NJ

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; commercial, flight instructor; airplane ratings: multi-engine land; instrument ratings: helicopter, airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 8,500 total, 5,000 in this make and model, 7,514 as pilot in command, 20 in the last 90 days, 14 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 1 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 45 °F, dew point -0 °F

## Other investigations on N7579 (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 CHI74DEA13](https://openairdocs.org/ntsb/CHI74DEA13), Sep 16, 1973: Bell 47G-2A (N7579), Veedersburg, IN, 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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