CEN09CA079

NTSB accident investigation · Piper PA18-150 · Colorado Springs, CO · November 2, 2008

Accident · No injuriesData collectionFinal report
Date
November 2, 2008, 11:11 local (18:11 UTC)
Place
Colorado Springs, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N18338Piper PA18-150
Defining event
Takeoff: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report January 22, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20081102851199A
Case key
69523

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

Loss of directional control due to an encounter with a weather phenomena at rotation.

Findings · 2

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.

Wind: dust devil/whirlwindEnvironmental issues › Conditions/weather/phenomena · Ability to respond/compensatePiper PA-18-150: 1 caseAll aircraft: 38 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedPiper PA-18-150: 98 casesAll aircraft: 3,958 casesProbable cause

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

According to the pilot, he was attempting to depart from an unimproved private airstrip. As the airplane rotated for lift-off at 35 to 40 miles per hour, it was "hit by a dust devil." The airplane rotated ninety degrees to the right and the application of full opposite control inputs failed to re-establish directional control. The airplane impacted terrain, causing the left landing gear to collapse, followed by the collapse of the right landing gear and resulting in multiple propeller ground strikes. The airplane sustained a bent right wing spar. The pilot reported the weather conditions at the time of the accident as a variable 7- to 10-knot wind, gusting to 12 to 15 knots. An hourly weather observation taken at the time of the accident 39 miles west of the accident site showed the wind to be 170 at four knots.

Factual narrative

According to the pilot, he was attempting to depart from an unimproved private airstrip. As the airplane rotated for lift-off at 35 to 40 miles per hour, it was "hit by a dust devil." The airplane rotated ninety degrees to the right and the application of full opposite control inputs failed to re-establish directional control. The airplane impacted terrain causing the left landing gear to collapse, followed by the collapse of the right landing gear, which resulted in multiple propeller ground strikes. The airplane sustained a bent right wing spar. The pilot reported the weather conditions at the time of the accident as a variable seven to ten knot wind, gusting to 12 to 15 knots. An hourly weather observation taken at the time of the accident 39 miles west of the accident site showed the wind to be 170 at four knots.

Aircraft

Registration
N18338
Reported as
Piper PA18-150
Category
Airplane
Serial number
18-8285
Airframe hours
4,500
Engine
Lycoming 0-320 A2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Conrad Lapp
Registered owner
Conrad Lapp
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 27, 2007
Departed
KCOS · Colorado Spring, CO
Destination
Rush, CO
Airport
N/A · Private airstrip

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
67
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
February 19, 2008
Seat
Front
Flight hours
1,046 total · 101 in this make and model · 892 as pilot in command · 36 in the last 90 days · 15 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Lowest ceiling
None
Temperature
63 °F, dew point 27 °F
Altimeter
29.95 inHg
Observed at
KCOS, 29 nm away

FAA reports on this event · 1

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