# NTSB DEN06LA038: Canadair CL-600, N900LG, Aspen, CO, February 9, 2006 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 9, 2006, 12:45 local (19:45 UTC) - Place: Aspen, CO - Coordinates: 39.223331, -106.868331 - Nearby events: https://openairdocs.org/map.md?lat=39.2233&lon=-106.8683&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report October 12, 2006 - Report: Approved by Office Director - Parties: FAA Flight Standards District Office - NTSB case key (mKey): 63213 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN06LA038 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/63213/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=63213 - Page: https://openairdocs.org/ntsb/DEN06LA038 ## Probable cause the flight's encounter with wake turbulence from the departing airplane resulting in the pilot's inability to control the airplane and the subsequent impact with the runway. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Vortex turbulence encountered, landing - flare/touchdown - Loss of control - in flight, landing - flare/touchdown - aircraft control - not possible, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - runway ## Analysis According to the pilot, he was landing on runway 15 when the airplane encountered wake vortices from an aircraft which had just departed runway 33. At 50 feet above ground level, the airplane rolled hard to the left and the stall warning horn activated. The pilot added power and the airplane rolled hard to the right. The pilot was able to stop the roll; however, the nose dropped and the right main landing gear impacted the runway, resulting in substantial damage. The pilot did not report any anomalies with the airframe, flight controls, engines, or weather. ## Factual narrative On February 9, 2006, approximately 1245 mountain standard time, a Canadair CL-600, N900LG, owned by Branblebush LLC, and piloted by an airline transport pilot, was substantially damaged while landing at Aspen-Pitkin County Airport (ASE), Aspen, Colorado. Visual meteorological conditions prevailed at the time of the accident. The business flight was being conducted under the provisions of Title 14 CFR Part 91 on an instrument flight rules flight plan. The pilot, co-pilot, and passenger were not injured. The cross-country flight departed Van Nuys, California, at 1045. According to the pilot, he was landing on runway 15 (7,006 feet by 100 feet, asphalt) when the airplane encountered wake vortices from a BAe 146, which had just departed runway 33. At 50 feet above ground level, the airplane rolled hard to the left and the stall warning horn activated. The pilot added power and the airplane rolled hard to the right. The pilot was able to stop the roll; however, the nose dropped and the right main landing gear impacted the runway. The pilot reduced the power to "idle" and attempted to maintain runway centerline. The right main landing gear strut penetrated the right wing, the leading edge of the right wing was crushed aft, and the right aft wing spar was bent and buckled. The pilot did not report any anomalies with the airframe, flight controls, engines, or weather. The airplane was equipped with a Fairchild Model A-100A cockpit voice recorder. This recorder was removed and sent to the National Transportation Safety Board's Vehicle Recorder Division for readout and a summary transcript was prepared. The recording was 31 minutes and 15 seconds in length and times are expressed in elapsed time only. According to the transcript, the accident airplane was cleared to land 26 minutes and 33 seconds into the recording. At this time, the controller reported that the winds were calm. At 28 minutes and 46 seconds, the BAe 146 was cleared for takeoff and the crew of the accident airplane commented to each other "airplane's on the roll." At 31 minutes at 09 seconds, the recorder captured a comment about "plus five sinking five", and at 31 minutes and 12 seconds, a stall warning horn was heard for 1.08 seconds. At 31 minutes and 15 seconds, the sound of an impact was captured. ## Aircraft - Registration: N900LG (not matched to a registry record) - Reported make and model: Canadair CL-600 - Category: Airplane - Serial number: 1036 - Airframe hours: 6726 - Engines: Honeywell ALF-502-C 7500 lbs thrust turbo fan - Damage: Substantial damage - Flight: Business, Part 91 - Registered owner: Bramblebush LLC - Airworthiness certificate: Standard, Transport - Last inspection: AAIP, April 1, 2005 - Departed: VNY, VAN NUYS, CA - Destination: ASE, Aspen, CO - Flight plan: IFR - Airport: ASE, Aspen-Pitkin Co/Sardy Field, runway 15, 7,006 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; injuries: none; commercial, flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review September 1, 2005; seat: right; flight hours: 11,800 total, 350 in this make and model, 10,252 as pilot in command, 41 in the last 90 days, 6 in the last 30 days, 4 in the last 24 hours - Co-pilot; age 52; injuries: none; flight instructor, airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review January 1, 2006; seat: left; flight hours: 3,548 total, 147 in this make and model, 1,695 as pilot in command, 40 in the last 90 days, 5 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 43 °F, dew point 12 °F - Altimeter: 30.12 inHg - Observed at: ASE, 1 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 (OpenAirDocs). - [Accident 20060209002799A](https://openairdocs.org/incident/20060209002799A), Feb 9, 2006: Cndair CL6001A11, Aspen, CO, Substantial damage. (-23) On February 9, 2006, at approximately 1234 MST, a Canadair CL-600, N900LG, piloted by captain [privacy data omitted] (pf in the left seat) and pilot in… ## Docket (5 files) The files NTSB released with the investigation on June 28, 2006, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=63213. 987 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 613 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40257520&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.PDF - Supplement E (item 2, .PDF, 80 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40257521&FileExtension=.PDF&FileName=Supplement%20E-Master.PDF - Supplement S (item 3, .PDF, 21 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40257523&FileExtension=.PDF&FileName=Supplement%20S-Master.PDF - Radar Plot (item 4, .PDF, 253 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40261806&FileExtension=.PDF&FileName=Radar%20Plot-Master.PDF - Cockpit Voice Recorder 12 - Factual Report of Group Chairman (item 5, .PDF, 18 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40263077&FileExtension=.PDF&FileName=Cockpit%20Voice%20Recorder%2012%20-%20Factual%20Report%20of%20Group%20Chairman-Master.PDF 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.