CEN10LA472

NTSB accident investigation · Piper PA-18 · Aspen, CO · August 11, 2010

Accident · No injuriesLimited investigationFinal report
Date
August 11, 2010, 11:15 local (17:15 UTC)
Place
Aspen, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N350CCPiper PA-18
Defining event
Takeoff: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2010
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA Flight Standards District Office
FAA report
20100811040669A
Case key
76929

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 failure to maintain directional control during takeoff in gusting crosswind conditions.

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.

Action: delayed actionPersonnel issues › Action/decision · PilotPiper PA-18: 3 casesAll aircraft: 894 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-18: 3 casesAll aircraft: 1,008 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationPiper PA-18: 5 casesAll aircraft: 1,199 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 taking off on runway 33. As the tail started coming off the ground, the plane veered off to the left and "accelerated into a typical ground loop." After the accident, four witnesses approached the pilot and told him that right after he added power, the wind sock swung around into a 90-degree crosswind and that a strong gust moved across the field. The pilot said that age was slowly "having its effect," and was slowing his reaction time.

Factual narrative

On August 11, 2010, approximately 1115 mountain daylight time, a Piper PA-18, N350CC, registered to and operated by the pilot, was substantially damaged when it collided with terrain during takeoff roll at Aspen-Pitkin County/Sardy Field (ASE), Aspen, Colorado. Visual meteorological conditions (VMC) prevailed at the time of the accident. The personal flight was being conducted under the provisions of Title 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The pilot, the sole occupant on board, was not injured. The local flight was originating at the time of the accident. According to the pilot's accident report, he was taking off on runway 33. He wrote: "As the tail started coming off the ground, the plane veered off to the left and accelerated into a typical ground loop." The pilot said that after the accident, four witnesses approached him and told him that right after he added power, the wind sock swung around into a 90-degree crosswind and that a strong gust moved across the field. The pilot said he made several mistakes. He said should have waited longer for the storm that was in the area to move farther west; he should not have gone to the end of the runway but asked the tower for an intersection departure; and he should have paid more attention to the wind sock at the downwind end of the runway. The pilot added that "Age is slowly having its effect" and his "reaction time is not what it use to be."

Aircraft

Registration
N350CC
Reported as
Piper PA-18
Category
Airplane
Serial number
18-1172
Airframe hours
3,146
Engine
Lycoming O-320-A2B, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Charles W. Cullwell
Registered owner
Charles W. Cullwell
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 4, 2010 · 24 hours before
Departed
ASE · Aspen, CO
Destination
GWS · Glenwood Sprngs, CO
Airport
ASE · Aspen-Pitkin County/Sardy Fld, runway 33, 7,006 × 100 ft, macadam

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
77
Injuries
None
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
March 7, 2009
Seat
Front
Flight hours
9,791 total · 2,500 in this make and model · 9,791 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
40° at 11 knots, gusting 17
Visibility
10 statute miles
Lowest ceiling
6,000 ft broken
Temperature
64 °F, dew point 39 °F
Altimeter
30.36 inHg
Observed at
ASE

Docket · 5

The files NTSB released with the investigation on September 16, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.4 MB 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 N350CC · 1

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