DEN07CA110

NTSB accident investigation · Cessna T206H · Steamboat Spngs, CO · June 29, 2007

Accident · No injuriesData collectionFinal report
Date
June 29, 2007, 15:05 local (21:05 UTC)
Place
Steamboat Spngs, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N72638Cessna T206H
Weather
Visual (VMC) · Day
Status
Completed · report August 30, 2007
Report
Approved by Office Director
Case key
66106

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 inadvertent encounter with adverse weather conditions (dirt devils/whirlwinds) and his inability to control the airplane during that encounter resulting in the airplane impacting the runway, subsequently going off the side of the runway, and striking a taxiway sign. A factor contributing to the accident was the dirt devil.

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 encounter with weatherLanding - flare/touchdown
Flight into adverse weather - inadvertentPilot in commandCause
Weather condition - dust devil/whirlwindFactor
Loss of control - in flightLanding - flare/touchdown
Aircraft control - not possiblePilot in commandCause
In flight collision with objectLanding - aborted
Object - airport sign/marker

Analysis

The pilot was landing when his airplane encountered what he thought might be a microburst. His airplane had gone approximately 300 feet when the airplane's tail lifted up, the right wing came down, and the propeller struck the runway. The airplane then went off the right side of the runway where it struck a taxiway sign. During the impact with the sign, the left bottom fuselage, left elevator, and left horizontal stabilizer sustained substantial damage. The pilot immediately executed a go around, flew the airplane around the traffic pattern, and landed uneventfully. An examination of the airplane showed no anomalies. The pilot said that he recalled approximately 2 minutes prior to landing the Automated Weather Observing System (AWOS) was reporting winds of 230 degrees at 3 knots. Wind conditions reported at Hayden, Colorado (249 degrees at 30 miles), approximately 10 minutes prior to the accident were 210 degrees at 12 knots with gusts to 17 knots. Twenty minutes earlier, the wind conditions were 190 degrees at 12 knots with gusts to 14 knots. Ten minutes after the accident the wind conditions were 210 degrees at 8 knots, with winds becoming variable between 170 and 230 degrees. The airport manager said that he had observed "dirt devils" on the airport prior to and after the accident.

Factual narrative

The pilot was landing when his airplane encountered what he thought might be a microburst. His airplane had gone approximately 300 feet when the airplane's tail lifted up, the right wing came down, and the propeller struck the runway. The airplane then went off the right side of the runway where it struck a taxiway sign. The pilot immediately executed a go around, flew the airplane around the traffic pattern, and landed uneventfully. An examination of the airplane showed the left elevator counterweight was broken aft and missing. The left horizontal stabilizer was bent upward and aft. The left side bottom aft fuselage skin, ribs, and stringers showed longitudinally-running scrapes, tears, upward crushing, and aft bending. All three propeller blades showed tip damage. Nine propeller strikes were observed in the runway asphalt. An examination of the airplane's systems showed no anomalies.

The pilot said that he recalled approximately 2 minutes prior to landing the Automated Weather Observing System (AWOS) was reporting winds of 230 degrees at 3 knots.

Wind conditions reported at Hayden, Colorado (249 degrees at 30 miles), approximately 10 minutes prior to the accident were 210 degrees at 12 knots with gusts to 17 knots. Twenty minutes earlier, the wind conditions were 190 degrees at 12 knots with gusts to 14 knots. Ten minutes after the accident the wind conditions were 210 degrees at 8 knots, with winds becoming variable between 170 and 230 degrees.

The airport manager said that he had observed "dirt devils" on the airport prior to and after the accident.

Aircraft

Registration
N72638
Reported as
Cessna T206H
Category
Airplane
Serial number
T20608127
Engine
Lycoming TIO-540, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Jack L. Dysart
Airworthiness certificate
Standard, Normal
Departed
Denver, CO
Destination
SBS · Steamboat Spngs, CO
Airport
SBS · Steamboat Springs/Bob Adams Fi

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
60
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land, Single-engine sea
Instrument ratings
Airplane
Medical
Class 2
Flight hours
1,100 total · 250 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 12 knots, gusting 17
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 28 °F
Altimeter
30.13 inHg
Observed at
HDN