ANC93LA160

NTSB accident investigation · Piper PA-18 · Happy Valley, AK · August 29, 1993

Accident · No injuriesLimited investigationFinal report
Date
August 28, 1993, 16:00 local (Aug 29, 1993, 00:00 UTC)
Place
Happy Valley, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N6819LPiper PA-18
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 1994
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19930828032049A
Case key
2416

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 preflight planning/decision, and his failure to maintain directional control of the airplane. A factor was the rough/uneven terrain.

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
Preflight planning/preparation - improperPilot in commandCause
Directional control - not maintainedPilot in commandCause
Airport facilities,runway/landing area condition - rough/unevenFactor
Main gear collapsedTakeoff - roll/run
Landing gear,main gear - overload

Analysis

The pilot, involved in a hunt/guide operation, stated that the airplane veered off to the left and he could not correct sufficiently before it went off the side of the takeoff area. Both main landing gear collapsed, and both wings and the fuselage were damaged. The pilot was attempting to takeoff with a passenger, from an unimproved remote site approximately 700 feet long.

Factual narrative

On August 28, 1993, at 1600 Alaska daylight time, the pilot of a wheel equipped Piper PA 18 airplane, N6819L, lost control of the airplane and crashed during an attempted takeoff from a remote strip located 21 miles west of Happy Valley, Alaska, and approximately 100 miles south of Deadhorse, Alaska. The private pilot, the sole occupant, was not injured, and the airplane was substantially damaged. The personal flight was operating under 14 CFR Part 91 when the accident occurred. Visual meteorological conditions existed, and a company flight plan was filed.

When the pilot reported the accident by telephone on August 30, 1993, he stated the following in part: "I was taking off from a tundra strip about 700 feet long. I had previously made 6 or 8 takeoffs and landings at that strip. I started the takeoff run with no flaps, then put in one notch of flaps when I got up some speed. The airplane did not seem to want to get airborne. I might have been a little late getting the tail off the ground. The airplane veered off the left and I could not correct sufficiently before it went off the side of the strip. The main landing gear collapsed, both wings were damaged, and the fuselage was twisted."

Aircraft

Registration
N6819L
Reported as
Piper PA-18
Category
Airplane
Serial number
18-7409103
Airframe hours
1,600
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Operator
Watkins, Thomas F.
Registered owner
Watkins, Thomas F.
Last inspection
Annual · September 29, 1992 · 172 hours before
Flight plan
Company 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
41
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
506 total · 483 in this make and model · 506 as pilot in command · 250 in the last 90 days · 80 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
2,500 ft overcast
Temperature
39 °F, dew point 41 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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

Other investigations on N6819L · 1

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