ANC09LA103

NTSB accident investigation · Piper PA-18 · Nabesna, AK · September 18, 2009

Accident · No injuriesLimited investigationFinal report
Date
September 18, 2009, 14:00 local (22:00 UTC)
Place
Nabesna, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N1169APiper PA-18
Defining event
Takeoff: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed · report August 12, 2010
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration (Operations)
FAA report
20090918025619A
Case key
74765

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 selection of an unsuitable takeoff area with an unfavorable wind.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

AircraftAircraft › Aircraft oper/perf/capability · Capability exceededPiper PA-18-125: 1 caseAll aircraft: 63 cases
Wind: variable windEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomePiper PA-18-125: 1 caseAll aircraft: 113 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot was departing from a rough and uneven 800-foot-long remote airstrip in a tundra tire-equipped airplane. The pilot said that after assessing his passenger's weight, coupled with the southerly light and variable winds, he elected to depart to the south. He said that just after takeoff the wind suddenly switched to a tailwind and the airplane stopped climbing. The airplane then collided with a stand of trees and brush at the departure end of the site, sustaining substantial damage to the wings and empennage. The pilot noted that there were no preaccident mechanical anomalies with the airplane.

Factual narrative

On September 18, 2009, about 1400 Alaska daylight time, a tundra tire-equipped Piper PA-18 airplane, N1169A, sustained substantial damage when it collided with trees and brush after takeoff from a remote airstrip, about 12 miles south of Nabesna, Alaska. The airplane was being operated as a visual flight rules (VFR) other work use flight, in support of the operator’s hunting guide business, under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91, when the accident occurred. The commercial pilot and one passenger were not injured. Visual meteorological conditions prevailed, and company flight following procedures were in effect. At the time of the accident the flight was returning to the operator's remote lodge near Nabesna, with a hunting client aboard. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on September 18, the pilot related that before departing from the 800 foot long, rough and uneven airstrip, he assessed his passenger's weight, along with wind conditions before electing to depart to the south. He characterized the winds as light and variable, but from a southerly direction. Just after takeoff, as the airplane climbed to about 10 feet above the ground, the pilot realized that the wind was now out of the north, and the airplane stopped climbing as it neared the departure end of the airstrip. The airplane collided with a stand of trees and brush, coming to rest about 75 feet from the departure end of the airstrip, sustaining substantial damage to the wings and empennage. The pilot reported that there were no preaccident mechanical anomalies with the airplane.

Aircraft

Registration
N1169A
Reported as
Piper PA-18
Category
Airplane
Serial number
18-767
Airframe hours
7,018
Engine
Lycoming O-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Other work use · Part 91
Operator
Wendell Kirk Ellis
Registered owner
Wendell Kirk Ellis
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 1, 2009 · 83 hours before
Departed
Nabesna, AK
Destination
Nabesna, AK
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
52
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Seat
Front
Flight hours
8,766 total · 8,419 in this make and model · 8,683 as pilot in command · 73 in the last 90 days · 45 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 34 °F
Altimeter
29.47 inHg

Docket · 1

The files NTSB released with the investigation on July 7, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 506 KB in all.

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 N1169A · 2

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