# NTSB DFW08CA221: Cessna 560, N839QS, Telluride, CO, September 1, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: September 1, 2008, 16:30 local (22:30 UTC) - Place: Telluride, CO - Coordinates: 37.95222, -107.905281 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.9522&lon=-107.9053&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Defining event: [Approach-VFR pattern final: Windshear or thunderstorm](https://openairdocs.org/ntsb-events/390) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 22, 2009 - Report: Approved by Office Director - Parties: FAA FSDO - NTSB case key (mKey): 68859 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW08CA221 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/68859/pdf - Page: https://openairdocs.org/ntsb/DFW08CA221 ## Probable cause The pilot's failure to maintain control during landing. A factor was the reported wind shear. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: windshear](https://openairdocs.org/ntsb-findings/03034020): Environmental issues › Conditions/weather/phenomena · Effect on operation (probable cause); cases with it: [All aircraft, 90 cases](https://openairdocs.org/ntsb-findings/03034020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Approach-VFR pattern final: Windshear or thunderstorm](https://openairdocs.org/ntsb-events/390) (defining event); cases with it: [All aircraft, 224 cases](https://openairdocs.org/ntsb-events/390/sequence.md) - [Landing-flare/touchdown: Abnormal runway contact](https://openairdocs.org/ntsb-events/090); cases with it: [All aircraft, 1,506 cases](https://openairdocs.org/ntsb-events/090/sequence.md) - [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230); cases with it: [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis On final approach to land, the twin-jet airplane encountered an increasing headwind accompanied by a "Caution Wind shear" audio alert, while approximately 50 feet above ground level. The airplane landed hard and bounced several times before departing the left side of the runway. The airplane came to rest in an upright position and the pilot and copilot were able to exit unassisted. The forward pressure bulkhead, fuselage, and left aileron sustained structural damage during the accident. In addition, the nose wheel assembly was found separated from the fuselage. An examination of the nose wheel assembly revealed that the fracture was consistent with an overload failure. No anomalies were reported with the airplane's flight controls or engines. ## Factual narrative On final approach to land, the twin jet airplane encountered an increasing headwind accompanied by a "Caution Wind shear" audio alert, while approximately 50 feet above ground level. The airplane landed hard and bounced several times before departing the left side of the runway. The airplane came to rest in an upright position and the pilot and copilot were able to exit the unassisted. The forward pressure bulkhead, fuselage, and left aileron sustained structural damage during the accident. In addition, the nose wheel assembly was found separated from the fuselage. An examination of the nose wheel assembly reveled that the fracture was consistent with an overload failure. No anomalies were reported with the airplane’s flight controls or engines. ## Aircraft - Registration: N839QS (not matched to a registry record) - Reported make and model: CESSNA 560 - Category: Airplane - Serial number: 560-0690 - Airframe hours: 2741 - Engines: P&W CANADA PW535A 3400 horsepower turbo fan; P&W CANADA PW535A 3400 horsepower turbo fan - Damage: Substantial damage - Flight: Positioning, Part 91 - Operator: NetJets Aviation, Inc - Registered owner: Cit Group/Equipment Financing Inc - Airworthiness certificate: Standard, Normal - Last inspection: AAIP, August 5, 2008 - Departed: KSGR, Houston, TX - Destination: KTEX, Tellurdie, CO - Flight plan: Unknown - Airport: KTEX, Telluride Regional Airport, runway 09, 6,870 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 48; injuries: none; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; seat: right; flight hours: 14,763 total, 448 in this make and model, 14,000 as pilot in command, 23 in the last 90 days, 19 in the last 30 days, 5 in the last 24 hours - Co-pilot; age 41; injuries: none; airline transport; airplane ratings: multi-engine land, single-engine land, single-engine sea; instrument ratings: airplane, helicopter; medical: class 1, without waivers/limitations; last flight review August 17, 2008; seat: left; flight hours: 5,844 total, 429 in this make and model, 2,900 as pilot in command, 39 in the last 90 days, 21 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 220° at 6 knots, gusting 17 - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 64 °F, dew point 39 °F - Altimeter: 30.20 inHg - Observed at: KTEX ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20080901845599A](https://openairdocs.org/incident/20080901845599A), Sep 1, 2008: Cessna 560CESSNA, Telluride, CO, No damage. N839QS flew from sugarland, TX (ksgr) to Telluride, CO (ktex) on September 1, 2008. The flight landed at approximately 17:14 local time. The aircraft touch… 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.