# NTSB NYC83FNC05: Enstrom 280C, N587H, New Market, NH, June 2, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Final report
- Date: June 2, 1983, 13:20 local (18:20 UTC)
- Place: New Market, NH
- Location: 43.0757° N, 70.9407° W: Placed by OpenAirDocs: center of Newmarket, NH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0757&lon=-70.9407&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35113
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC83FNC05
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35113/pdf
- Page: https://openairdocs.org/ntsb/NYC83FNC05

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, takeoff - initial climb
  - adequate rotor rpm - not maintained, pilot in command (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - dirt bank/rising embankment (contributing factor)
  - terrain condition - none suitable (contributing factor)

## Analysis

AFTER COMPLETING A NORMAL RUN-UP & MAG CHECK, THE PLT HOVERED IN GROUND EFFECT. A NORMAL TAKEOFF WAS THEN MADE IN GROUNDEFFECT. AT ABOUT 200 FT AGL THE PLT NOTICED THE RPM DROPPING FROM 2900 TO ABOUT 2700. HE TRIED TO RESTORE BY DROPPING COLLECTIVE & INCREASING THROTTLE, BUT THERE WAS NO RESPONSE & THE RPM CONTINUED TO DROP. HE THEN RESTORED COLLECTIVE TO 33-34 INCHES OF MP BUT RPM STILL CONTINUED TO DROP. AT ABOUT 300 FT AGL & WITH THE RPM LAST OBSERVED AT 2300, A FORCED LANDING WAS MADE ON A 45 DEG SLOPING DIRT PILE.

## Aircraft

- Registration: [N587H](https://openairdocs.org/deregistered/N587H-1984-07-13), registration cancelled 1984-07-13, S/N 1051 (OpenAirDocs)
- Reported make and model: ENSTROM 280C
- Registry model: [Enstrom Helicopter 280C](https://openairdocs.org/model/enstrom-helicopter-280c) (registry code 3300505) (OpenAirDocs)
- Category: Helicopter
- Serial number: 1054
- Airframe hours: 592
- Engines: LYCOMING HIO-360-E 205 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Registered owner: Paul M. Mack
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 19, 1982, 41 hours before
- Destination: HAMPTON BEACH, NH
- Flight plan: Unknown

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 551 total, 260 in this make and model, 432 as pilot in command, 10 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 70 °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 19830602022109A](https://openairdocs.org/incident/19830602022109A), Jun 2, 1983: Enstrm 280C, Newmarket, NH, Substantial damage. Lost power on climbout. Struck a dirt mound on autorotation landing. Found clogged fuel injector nozzles.

## Other investigations on N587H (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 NYC77FA069](https://openairdocs.org/ntsb/NYC77FA069), Jun 24, 1977: Enstrom 280C (N587H), Prt Washingtn, NY, 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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