ANC86LA093

NTSB accident investigation · Piper PA-20 · Tolsona Lake, AK · June 28, 1986

Accident · No injuriesLimited investigationFinal report
Date
June 28, 1986, 15:05 local (23:05 UTC)
Place
Tolsona Lake, AK
Injuries
4 uninjured
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N6910KPiper PA-20
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19860628028339A
Case key
4688

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

On this page

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 - in flightTakeoff - initial climb
In-flight planning/decision - inaccuratePilot in commandCause
Wind information - not understoodPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Airspeed - not maintainedPilot in commandFactor
Stall - inadvertentPilot in commandCause

Analysis

The private pilot attempted to turn downwind when he encountered downdraft conditions during a floatplane takeoff. The airplane stalled and crashed into the lake he departed from.

Aircraft

Registration
N6910K
Reported as
Piper PA-20
Category
Airplane
Serial number
20-5
Airframe hours
2,270
Engine
Lycoming O-320-AB, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Gary Kent Watson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 27, 1986 · 3 hours before
Departed
AK58 · Tolsona Lake, AK
Destination
Long Lake, AK
Airport
AK58 · Tolsona Lake

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
36
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
167 total · 167 in this make and model · 123 as pilot in command · 45 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 10 knots, gusting 15
Visibility
50 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point -0 °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.