ANC06CA108

NTSB accident investigation · Piper PA-18-150 · Tyonek, AK · August 6, 2006

Accident · No injuriesData collectionFinal report
Date
August 6, 2006, 14:45 local (22:45 UTC)
Place
Tyonek, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N57778Piper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed · report December 28, 2006
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Anchorage FSDO
FAA report
20060806022629A
Case key
64299

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 failure to maintain a minimum airspeed to avoid a stall, which resulted in a loss of control and a collision with terrain during takeoff initial climb. A factor associated with the accident was an inadvertent stall.

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
Airspeed(vs) - not maintainedPilot in commandCause
Stall - inadvertentPilot in commandFactor
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - water

Analysis

The private pilot was departing from a remote lake in a float-equipped airplane. The pilot said that just after takeoff, the airplane's left wing stalled, and the airplane struck the water and shoreline, sustaining substantial damage to both wings. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

Factual narrative

The private pilot was departing from a remote lake in a float-equipped airplane. The pilot said that just after takeoff, the airplane's left wing stalled, and the airplane struck the water and shoreline, sustaining substantial damage to both wings. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

Aircraft

Registration
N57778
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-7709129
Airframe hours
1,220.3
Engine
Lycoming O-320-A2B, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
William A. Niederer
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2006 · 8.3 hours before
Departed
Tyonek, AK
Destination
LHD · Anchorage, 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
53
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Medical
Class 3, Without waivers/limitations
Flight hours
171 total · 60 in this make and model · 115 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 8 knots
Visibility
10 statute miles
Temperature
64 °F

FAA reports on this event · 1

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