ANC96LA094

NTSB accident investigation · Piper PA-18 · Cantwell, AK · July 3, 1996

Accident · No injuriesLimited investigationFinal report
Date
July 3, 1996, 15:50 local (23:50 UTC)
Place
Cantwell, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N57617Piper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report February 18, 1997
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19960703020009A
Case key
2856

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 inadequate compensation for the crosswind conditions. A factor in the accident was the crosswind.

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
Weather condition - crosswindFactor
Compensation for wind conditions - inadequatePilot in commandCause
On ground/water collision with objectTakeoff - roll/run
Object - tree(s)

Analysis

The pilot and passenger were departing a remote and sandy area in the tailwheel-equipped airplane. The pilot had utilized the area many times in the past. The takeoff area is about 1,940 feet mean sea level and the temperature was about 70 degrees F. Variable wind conditions were blowing from the left side of the takeoff area with gusts of 25 knots. During the takeoff roll, a gust of wind pushed the airplane to the right into several alder trees. The airplane then ground looped and received damage to the left wing spar and left aileron.

Factual narrative

On July 3, 1996, about 1550 Alaska daylight time, a tundra tire equipped Piper PA-18, N57617, collided with several trees during the takeoff roll from a small sand bar located at mile post 185.9 of the Parks Highway, about 20 miles south of Cantwell, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight when the accident occurred. The airplane, registered to and operated by the pilot, sustained substantial damage. The certificated private pilot, and the sole passenger, were not injured. Visual meteorological conditions prevailed.

The Alaska State Troopers reported that the pilot landed to clean up an area along the highway that is used for an archery range. The pilot indicated to a trooper that the weather was very warm and during the take off, the airplane did not become airborne and struck several alder trees located at the end of the takeoff area.

On July 5, 1996, at 1145, the pilot reported in a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), that he has landed on a sandy area at the accident site many times in the past. The pilot indicated that the elevation of the takeoff area is about 1,940 feet mean sea level and the temperature was about 70 degrees F. He also reported that variable wind conditions were blowing from the left side of the takeoff area with gusts of 25 knots. During the takeoff, a gust of wind pushed the airplane to the right, into several alder trees. The airplane then ground looped and received damage to the left wing spar and left aileron.

The closest weather observation site is Talkeetna, Alaska, located about 50 miles south of the accident site. A 1550 surface weather observation was reporting, in part: Sky condition and ceiling; 5,000 feet scattered, 25,000 feet scattered; visibility, 30 miles; temperature, 77 degrees F; wind, 310 degrees at 4 knots.

Aircraft

Registration
N57617
Reported as
Piper PA-18
Category
Airplane
Serial number
18-7709125
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Fire
Unknown
Flight
Personal · Part 91
Registered owner
Jimmy L. Harkins
Airworthiness certificate
Standard, Normal
Destination
BCV · Birchwood, AK

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
Expired
Seat
Front
Flight hours
5,800 total · 5,300 in this make and model · 5,700 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 4 knots
Visibility
30 statute miles
Lowest ceiling
None
Temperature
77 °F
Observed at
TKN, 50 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.

Other investigations on N57617 · 4

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