ANC96LA071

NTSB accident investigation · Piper PA-18-150 · Big Lake, AK · May 14, 1996

Accident · No injuriesLimited investigationFinal report
Date
May 14, 1996, 14:35 local (22:35 UTC)
Place
Big Lake, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N5760DPiper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed · report September 19, 1996
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19960514010449A
Case key
2841

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

On this page

Probable cause

the pilot's improper planning/decision, which resulted in his failure (or inability) to maintain clearance from trees after encountering gusty crosswind conditions. The wind condition and close proximity of trees were related factors.

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.

In flight collision with objectTakeoff - initial climb
Planning/decision - improperPilot in commandCause
Weather condition - crosswindFactor
Weather condition - gustsFactor
Object - tree(s)
Clearance - not maintainedPilot in commandCause

Analysis

The pilot reported he had just changed his airplane's main landing gear configuration from wheels to floats. He said he was taking off to the west from a creek which entered a large lake. He estimated the wind was from the northwest at 10 to 12 knots as he began the takeoff run. Shortly after becoming airborne, he said a gust of wind, estimated at 30 knots or more, caused the right wing to lift and turn the airplane toward trees, which lined the creek bank. The pilot was able to level the airplane's wings, but was unable to turn away from the trees. Subsequently, the airplane collided with the trees and a small boat that rested in front of a lakeside home.

Factual narrative

On May 14, 1996, about 1435 Alaska daylight time, a float equipped Piper PA-18-150 airplane, N5760D, sustained substantial damage when it collided with trees during takeoff from Fish Creek, near Big Lake, Alaska. The solo private pilot was not injured. The local, 14 CFR Part 91 flight operated in visual meteorological conditions without a flight plan.

The pilot reported he had just converted his airplane from wheels to floats, and was departing to the west, from Fish Creek towards the juncture of Fish Creek and Big Lake. He estimated the wind as 10 to 12 knots from the northwest. Shortly after liftoff, he said a wind gust estimated at 30 knots, lifted the right wing and caused the airplane to turn left, toward adjacent trees. He said he was unable to correct quickly enough to avoid the trees, and the airplane subsequently struck trees located in front of a lakeside residence. The pilot said a small boat located near the crash site also received some damage.

Aircraft

Registration
N5760D
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-5262
Engine
Lycoming O-320-A1, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
John W. Reed
Airworthiness certificate
Standard, Normal

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
55
Certificate
Private
Airplane ratings
Single-engine sea, Single-engine land
Seat
Front
Flight hours
2,200 total · 2,000 in this make and model · 2,100 as pilot in command · 30 in the last 90 days · 10 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 12 knots, gusting 30
Visibility
50 statute miles
Lowest ceiling
None
Temperature
63 °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 N5760D · 2

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