NYC97LA119

NTSB accident investigation · Enstrom F-280C · Sharon, VT · June 13, 1997

Accident · Minor injuriesLimited investigationFinal report
Date
June 13, 1997, 11:00 local (15:00 UTC)
Place
Sharon, VT
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N5700JEnstrom F-280C
Weather
Visual (VMC) · Day
Status
Completed · report February 2, 1998
Report
Approved by Office Director
FAA report
19970613014129A
Case key
39378

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's improper decision to descend and fly at 100 feet over a river and his failure to maintain adequate obstacle clearance, which resulted in the in-flight collision with wires.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with objectApproach
Object - wire,transmission
In-flight planning/decision - improperPilot in commandCause
Clearance - not maintainedPilot in command
Loss of control - in flightDescent - uncontrolled
In flight collision with terrain/waterEmergency landing
Terrain condition - water

Analysis

The pilot and passenger departed on a local flight to land in a school yard to display the helicopter. After takeoff from the departure airport, the pilot over flew the school, then established a long final approach to the school yard. After crossing an interstate overpass, the pilot descended over a river. The helicopter struck wires that extended across the river, about 100 feet above the water, approximately 3/4 of a mile west of the intended school landing area. The helicopter came to rest in 2 feet of water. The pilot listed 429 hours of total flight experience, of which 193 were in helicopters, and 152 hours of helicopter pilot-in-command experience. The pilot did not provide experience in make and model, but listed 1.3 hours of helicopter experience during the previous 90 days.

Factual narrative

On June 13, 1997, about 1100 eastern daylight time, an Enstrom F-280C, N5700J, was substantially damaged during a collision with wires and descent into water near Sharon, Vermont. The certificated private pilot and passenger received minor injuries. Visual meteorological conditions prevailed for the personal flight that originated at Lebanon, New Hampshire, about 1045, destined for Sharon. No flight plan had been filed for the flight conducted under 14 CFR Part 91.

In a written statement, the pilot stated that the purpose of the flight was to land in a school yard and give a speech to students about helicopters. After departure from Lebanon, the pilot flew to Sharon, and circled the school.

The pilot further stated:

"...I then turned a slow 180 degrees, lining up with the river. After crossing over the Interstate bridge, I started a descent into the valley. This particular year my passenger requested we go lower into the valley...I slowed the ship down to approx 40 knots, and descended lower for a few seconds maintaining an approach to an island in from of us...I had just started to abort the approach to the island and started a slow climb when I caught the wire ahead...I tried to ascend immediately, but still caught the top high tension lines...suddenly the wire let go...I started a forward flight to the island to land...I heard and felt a severe noise followed by a loss of tail rotor control...I cut back power to stop [the] helicopter from spinning...The helicopter landed in 2 feet of water..."

According to a Federal Aviation Administration Inspector, the helicopter came to rest in about 2 to 3 feet of water. Impact damage to the helicopter from contact with the wires began on the upper cabin area, and extended to the main rotor mast and main rotor blades. Examination of the helicopter revealed no preimpact failure of the flight controls or engine.

The helicopter struck wires that extended across the river, about 100 feet above the water, approximately 3/4 of a mile west of the intended school landing area.

In the NTSB Form 6120.1/2, the pilot listed 429 hours of total flight experience, of which 193 were in helicopters, and 152 hours of helicopter pilot-in-command experience. The pilot did not provide experience in make and model, but did list 1.3 hours of helicopter experience during the previous 90 days.

Aircraft

Registration
N5700J
Reported as
Enstrom F-280C
Category
Helicopter
Serial number
1219
Airframe hours
1,267
Engine
Lycoming HIO-360-E1BD, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Roger D. Sharkey
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 19, 1997 · 34 hours before
Departed
LEB · Lebanon, NH
Destination
NONE

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
45
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
429 total · 314 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 8 knots
Visibility
7 statute miles
Lowest ceiling
11,000 ft broken
Temperature
75 °F, dew point 63 °F
Altimeter
29.00 inHg
Observed at
LEB, 11 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.