# NTSB DEN07CA110: Cessna T206H, N72638, Steamboat Spngs, CO, June 29, 2007 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 29, 2007, 15:05 local (21:05 UTC) - Place: Steamboat Spngs, CO - Coordinates: 40.516387, -107.217781 - Nearby events: https://openairdocs.org/map.md?lat=40.5164&lon=-107.2178&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report August 30, 2007 - Report: Approved by Office Director - NTSB case key (mKey): 66106 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN07CA110 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66106/pdf - Page: https://openairdocs.org/ntsb/DEN07CA110 ## 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 In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - In flight encounter with weather, landing - flare/touchdown - flight into adverse weather - inadvertent, pilot in command (cause) - weather condition - dust devil/whirlwind (contributing factor) - Loss of control - in flight, landing - flare/touchdown - aircraft control - not possible, pilot in command (cause) - In flight collision with object, landing - 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](https://openairdocs.org/aircraft/N72638), registered now, S/N T20608127, built 1999 (OpenAirDocs) - Reported make and model: Cessna T206H - Registry model: [Cessna T206H](https://openairdocs.org/model/cessna-t206h) (registry code 2073303) (OpenAirDocs) - Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs) - Category: Airplane - Serial number: T20608127 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 60; injuries: none; 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 From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.