# NTSB NYC84LA155: Bell 206, N3913W, Boston, MA, April 30, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 30, 1984, 15:33 local (19:33 UTC)
- Place: Boston, MA
- Location: 42.3584° N, 71.0598° W: Placed by OpenAirDocs: center of Boston, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3584&lon=-71.0598&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35547
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84LA155
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35547/pdf
- Page: https://openairdocs.org/ntsb/NYC84LA155

## Sequence of events

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

- Loss of engine power, takeoff - initial climb
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
  - autorotation - performed, pilot in command
- Hard landing, landing - flare/touchdown
  - flare - misjudged, pilot in command (cause)

## Analysis

AFTER TAKEOFF, THE HELICOPTER WAS CLIMBING THRU 200 TO 300 FT AGL, AT 50 TO 60 KTS, WHEN A PARTIAL LOSS OF POWER OCCURRED. THIS WAS FOLLOWED IMMEDIATELY BY A COMPLETE LOSS OF POWER. THE PLT INITIATED AN AUTOROTATION & LANDED IN A RAILROAD SWITCHING AREA WHERE THE MAIN ROTOR BLADES & TAIL BOOM SKIDS WERE DAMAGED. AN EXAM & GROUND RUN-UP OF THE ENG REVEALED NO REASON FOR THE LOSS OF POWER.

## Aircraft

- Registration: [N3913W](https://openairdocs.org/deregistered/N3913W-1992-05-18), registration cancelled 1992-05-18, S/N 45670 (OpenAirDocs)
- Reported make and model: BELL 206
- Registry model: [Bell Helicopter Textron 206L-1](https://openairdocs.org/model/bell-helicopter-textron-206l-1) (registry code 1182107) (OpenAirDocs)
- Category: Helicopter
- Serial number: 45670
- Airframe hours: 561
- Engines: ALLISON 250-C28B 435 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: T.M.A. Helicopters
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, February 16, 1984, 11 hours before
- Departed: SOUTH BOSTON, MA
- Destination: QUINCY, MA
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; airline transport, commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: right; flight hours: 3,289 total, 318 in this make and model, 2,769 as pilot in command, 168 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 18 knots, gusting 22
- Visibility: 12 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 48 °F
- Altimeter: 29.00 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 19840430024749A](https://openairdocs.org/incident/19840430024749A), Apr 30, 1984: Bell 206L1, South Boston, MA, Substantial damage. Pilot reported engine failed on climbout. Crash landed in railroad yard. Engine ran normal on post accident. Check.

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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