DEN06LA038

NTSB accident investigation · Canadair CL-600 · Aspen, CO · February 9, 2006

Accident · No injuriesLimited investigationFinal report
Date
February 9, 2006, 12:45 local (19:45 UTC)
Place
Aspen, CO
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N900LGCanadair CL-600
Weather
Visual (VMC) · Day
Status
Completed · report October 12, 2006
Report
Approved by Office Director
Parties
FAA Flight Standards District Office
FAA report
20060209002799A
Case key
63213

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 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

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.

Vortex turbulence encounteredLanding - flare/touchdown
Loss of control - in flightLanding - flare/touchdown
Aircraft control - not possiblePilot in commandCause
In flight collision with terrain/waterDescent - 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
Reported as
Canadair CL-600
Category
Airplane
Serial number
1036
Airframe hours
6,726
Engine
Honeywell ALF-502-C, 7,500 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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
52
Injuries
None
Certificates
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
Role
Co-pilot
Age
52
Injuries
None
Certificates
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

Docket · 5

The files NTSB released with the investigation on June 28, 2006, on NTSB’s docket system: statements, records, photos and specialists’ reports. 987 KB 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.