DEN07CA104

NTSB accident investigation · Beech B36TC · Hudson, CO · June 20, 2007

Accident · No injuriesData collectionFinal report
Date
June 20, 2007, 12:30 local (18:30 UTC)
Place
Hudson, CO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N6929BBeech B36TC
Weather
Visual (VMC) · Day
Status
Completed · report July 25, 2007
Report
Approved by Office Director
FAA report
20070620011989I
Case key
66054

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's improper in-flight decision, and his failure to maintain proper aircraft control during takeoff resulting in an inadvertent stall and the subsequent impact with the runway and terrain.

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.

Loss of control - in flightTakeoff
Aircraft control - not maintainedPilot in commandCause
Stall - inadvertentPilot in commandCause
In-flight planning/decision - improperPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The pilot took off on the 4,100' asphalt runway. During the takeoff roll, he said everything looked normal. He accelerated to 80 knots and rotated to a normal takeoff attitude. He said the airplane was slow to lift off, but did get into the air with approximately half the runway remaining. Immediately after breaking ground, the stall warning horn came on. The airplane was approximately 3-5 feet in the air when it rolled to the left. The left wing tip struck the ground. The airplane then rolled in the opposite direction striking the runway with the right main landing gear. The airplane then went off the left side of the runway, struck a dirt embankment, got airborne again, and then impacted the terrain in a nose down attitude. The airplane was substantially damaged. The pilot reported doing a full engine run-up prior to the takeoff attempt. All the airplane systems were working properly. The weather conditions at the time of the accident were clear skies, 7 miles visibility, winds 200 degrees at 5 knots, temperature 98 degrees Fahrenheit (F), dew point 34 degrees F, and an altimeter of 30.14 inches. The density altitude was calculated at 8,254 feet. Using an aircraft performance chart for "Take-off Distance - Flaps 0-degrees" provided by the pilot and entering raw weather data for the time of the accident, the chart shows a takeoff distance of approximately 1,950 feet. The chart is based on take-off power set before brake release, landing gear retracted when positive rate of climb is established, and a paved, level, dry runway surface.

Factual narrative

The pilot said he took off on the 4,100' asphalt runway. During the takeoff roll, he said everything looked normal. He accelerated to 80 knots and rotated to a normal takeoff attitude. He said the airplane was slow to lift off, but did get into the air with approximately half the runway remaining. Immediately after breaking ground, the stall warning horn came on. The airplane was approximately 3-5 feet in the air when it rolled to the left. The left wing tip struck the ground. The airplane then rolled in the opposite direction striking the runway with the right main landing gear. The airplane then went off the left side of the runway, struck a dirt embankment, got airborne again, and then impacted the terrain in a nose down attitude. An examination of the airplane showed damage to the trailing corner of the left wing tip, and trailing edge of the left flap. The airplane's nose gear was broken aft. The nose gear doors were bent upward and aft. Keel damage was observed in the nose wheel well between the nose gear pivots and drag brace. Forward fuselage skin in front of, and on both sides of the nose wheel was crushed upward. The three propeller blades showed torsional bending. All three blade tips were bent aft. The pilot reported doing a full engine run-up prior to the takeoff attempt. According to the pilot, all of the airplane's systems were working properly.

The weather conditions at the time of the accident were clear skies, 7 miles visibility, winds 200 degrees at 5 knots, temperature 98 degrees Fahrenheit (F), dew point 34 degrees F, and an altimeter of 30.14 inches. The density altitude was calculated at 8,254 feet. Using an aircraft performance chart for "Take-off Distance - Flaps 0-degrees" provided by the pilot and entering raw weather data for the time of the accident, the chart shows a takeoff distance of approximately 1,950 feet. The chart is based on take-off power set before brake release, landing gear retracted when positive rate of climb is established, and a paved, level, dry runway surface.

**This narrative was modified on July 10, 2007.**

Aircraft

Registration
N6929B
Reported as
Beech B36TC
Category
Airplane
Serial number
EA-414
Engine
Continental TSIO-520, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Planes & Properties LLC
Airworthiness certificate
Standard, Normal
Departed
18V · Hudson, CO

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
66
Injuries
None
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3
Flight hours
23,164 total · 632 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 5 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
99 °F, dew point 34 °F
Altimeter
30.13 inHg
Observed at
GXY

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.