CHI04CA020

NTSB accident investigation · Shapowal Rotorway Exec 90 · Cushing, MN · October 24, 2003

Accident · Minor injuriesData collectionFinal report
Date
October 24, 2003, 18:30 local (23:30 UTC)
Place
Cushing, MN
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N442DSShapowal Rotorway Exec 90
Weather
Visual (VMC) · Dusk
Status
Completed · report June 2, 2004
Report
Approved by Office Director
Parties
FAA -- Minneapolis FSDO
Case key
58303

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

Selection of an unsuitable landing area by the pilot due to the static wire across the approach path. Contributing factors were the pilot's disorientation, the static wire and the low light (dusk) conditions.

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 objectLanding
Precautionary landing - performedPilot in command
Became lost/disorientedPilot in commandFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Object - wire,staticFactor
Light condition - duskFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The amateur-built helicopter was substantially damaged during an in-flight collision with a static wire, and subsequently the terrain, during an approach for a precautionary landing. The pilot reported that he delayed his planned flight due to high winds. He stated that once the winds had died down, he departed for what should have been a 10 minute flight. However, after takeoff he reported that he made a wrong turn and became disoriented. While attempting to orient himself, the pilot "determined that [he] no longer had enough light to fly." He selected a location for a precautionary landing. He stated that he did not see the power lines on short final due to the poor lighting conditions. He reported that the helicopter "hit [the] power line at low speed and was thrown back and down on [its] left side." The pilot stated there were no malfunctions with the aircraft or engine prior to the accident.

Factual narrative

On October 24, 2003, at 1830 central daylight time, an amateur-built Shapowal Rotorway Exec 90 helicopter, N442DS, piloted by a private pilot, was substantially damaged during an in-flight collision with a static wire, and subsequently the terrain, during an approach for a precautionary landing near Cushing, Minnesota. Visual meteorological conditions prevailed at the time of the accident. The personal flight was being conducted under 14 CFR Part 91 and was not on a flight plan. The pilot reported minor injuries. The flight departed a farm 9 miles northwest of Motley, Minnesota, at 1610, with an intended destination of the pilot's residence 3 miles southwest of Pillager, Minnesota.

In his written statement, the pilot reported that he delayed his planned flight due to high winds earlier in the day. He stated that once the winds had died down, he departed for what should have been a 10 minute flight. He noted that after departure, he "turned north instead of south" and "after a few minutes [he] determined [he] was going the wrong direction." He subsequently located Motley, however he "missed the left (east) turn on County 28 south of Motley."

At that point, the pilot "determined that [he] no longer had enough light to fly." He stated that he selected a location for a precautionary landing. He reported that he did not see the power lines on short final due to the poor lighting conditions. He stated that the helicopter "hit [the] power line at low speed and was thrown back and down on [its] left side."

The pilot stated there were no malfunctions with the aircraft or engine prior to the accident.

Aircraft

Registration
N442DS
Reported as
Shapowal Rotorway Exec 90
Category
Helicopter, amateur-built
Serial number
5165
Airframe hours
112
Engine
Rotorway RI-162, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · May 1, 2002 · 24 hours before
Departed
PVT · Motley, MN
Destination
PVT · Pillager, MN
Airport
N/A

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
50
Injuries
Minor
Certificate
Private
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
114 total · 3 in this make and model · 14 as pilot in command · 26 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Dusk
Wind
270° at 8 knots
Visibility
10 statute miles
Temperature
52 °F, dew point 34 °F
Altimeter
29.84 inHg
Observed at
SAZ, 20 nm away