ANC97LA128

NTSB accident investigation · Helio H-295 · Fort Yukon, AK · August 23, 1997

Accident · No injuriesLimited investigationFinal report
Date
August 23, 1997, 15:00 local (23:00 UTC)
Place
Fort Yukon, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N6465VHelio H-295
Weather
Visual (VMC) · Day
Status
Completed · report July 13, 1998
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19970823023339A
Case key
3049

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

failure of the pilot to maintain directional control of the airplane, which resulted in a swerve and collision with a tree as the pilot continued the takeoff, subsequently jamming the stabilator and causing the plane to crash in water.

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.

Loss of control - on ground/waterTakeoff - roll/run
Directional control - not maintainedPilot in commandCause
Ground loop/swerve - inadvertentPilot in commandCause
In flight collision with objectTakeoff - initial climb
Object - tree(s)
Flight control,stabilator - jammed
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - water

Analysis

An on-demand passenger flight was departing a 1,000 foot long gravel bar in a southbound direction from a remote area of a river. The area had been used by the operator in the past. The pilot was picking up two passengers from a river float trip. During the takeoff run, the airplane had just attained flying speed, and suddenly veered to the right. The airplane lifted off, and attained a nose high pitch attitude. The tail struck a tree along the edge of the gravel bar, jamming the stabilator. The pilot pushed forward on the flight controls, but was unable to lower the nose of the airplane. The airplane climbed to about 100 feet above the ground, then stalled and descended toward the river. Subsequently, it collided with the river and came to rest in about 3 feet of water. The airplane received damage to the right main landing gear, elevator, fuselage, and engine.

Factual narrative

On August 23, 1997, about 1500 Alaska daylight time, a tundra tire equipped Helio H-295 airplane, N6465V, crashed during takeoff from a remote area of river, about 78 miles north of Fort Yukon, Alaska. The airplane was being operated as a visual flight rules (VFR) on-demand passenger flight, under Title 14 CFR Part 135, when the accident occurred. The airplane, operated by Wright Air Service Inc., Fairbanks, Alaska, sustained substantial damage. The certificated airline transport pilot, and 2 passengers, were not injured. Visual meteorological conditions prevailed. A VFR flight plan was filed. The flight originated at the Arctic Village Airport, Arctic Village, Alaska, about 1300.

The operator reported the pilot was departing a 1,000 foot long gravel bar in a southbound direction. The area, located along the Sheenjek River, had been used by the operator in the past, and the pilot was picking up two passengers from a river float trip. During the takeoff run, the airplane had just attained flying speed. Suddenly, the airplane veered to the right, and the tail struck a tree along the edge of the gravel bar, jamming the stabilator. The airplane lifted off the ground, and attained a nose high pitch attitude. The pilot pushed forward on the flight controls, but was unable to lower the nose of the airplane. The airplane climbed to about 100 feet above the ground, and then descended toward the river. The airplane collided with the river, and came to rest in about 3 feet of water. The airplane received damage to the right main landing gear, stabilator, fuselage, and engine.

Aircraft

Registration
N6465V
Reported as
Helio H-295
Category
Airplane
Serial number
1417
Airframe hours
7,519
Engine
Lycoming GO-480-G1D6, 295 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Wright Air Service
Registered owner
Al Wright
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 22, 1997 · 5 hours before
Departed
ARC · Arctic Village, AK
Flight plan
VFR

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
38
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
12,000 total · 237 in this make and model · 11,700 as pilot in command · 365 in the last 90 days · 130 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 4 knots
Visibility
25 statute miles
Lowest ceiling
None
Temperature
57 °F

FAA reports on this event · 1

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

Other investigations on N6465V · 2

Matched to the same aircraft by N-number and date.