# NTSB ATL84LA046: Bell 47-G, N64816, Middle River, MD, November 18, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 18, 1983, 15:23 local (20:23 UTC)
- Place: Middle River, MD
- Coordinates: 39.329078, -76.430259 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.3291&lon=-76.4303&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6387
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL84LA046
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6387/pdf
- Page: https://openairdocs.org/ntsb/ATL84LA046

## Sequence of events

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

- Roll over, hover
  - rotorcraft flight controls - improper use of, pilot in command (cause)
  - supervision - inadequate, pilot in command (cause)

## Analysis

WHILE PRACTICING HOVERING ABOUT 2 FT AGL THE STUDENT ALLOWED THE HELICOPER TO START DRIFTING AFT & RIGHT. THE RIGHT SKID HEEL CONTACTED THE GROUND & THE HELICOPTER ROLL ONTO ITS RIGHT SIDE.

## Aircraft

- Registration: [N64816](https://openairdocs.org/deregistered/N64816-2013-04-30), registration cancelled 2013-04-30, S/N 1255, built 1959 (OpenAirDocs)
- Reported make and model: BELL 47-G
- Registry model: [Bell H13G](https://openairdocs.org/model/bell-h13g) (registry code 1181005) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Helicopter
- Serial number: 1255
- Airframe hours: 3956
- Engines: FRANKLIN 6V reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Brett Aviation
- Registered owner: Dover International Machine
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 14, 1983, 1 hours before
- Airport: MTN, Glenn L. Martin State

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: helicopter, airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 3,942 total, 200 in this make and model, 3,658 as pilot in command, 89 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 8 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point 27 °F
- Altimeter: 30.00 inHg
- Observed at: MTN

## 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 19831118059109A](https://openairdocs.org/incident/19831118059109A), Nov 18, 1983: Bell 47G, Middle River, MD, Substantial damage. Instructor pilot allowed student to lose control of helicopter during hoover and it rolled over on its side.

## Other investigations on N64816 (2)

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 NYC79FA069](https://openairdocs.org/ntsb/NYC79FA069), Jul 30, 1979: Bell 47G (N64816), Poultney, VT, substantial damage
- [NTSB NYC73AN047](https://openairdocs.org/ntsb/NYC73AN047), Sep 27, 1972: Bell H-13G (N64816), Readfield, ME, substantial damage, 1 fatal

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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