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NTSB Report

June 20, 2007 · Beech B36TC · N6929B

Hudson, CO

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 20, 2007
Injury Outcomes
No injuries (2 uninjured)
Location
Hudson, CO
Aircraft
Beech B36TC
Tail Number
N6929B
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN07CA104

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.

NTSB 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.

Full 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.**

Flight

Event TypeAccident
Event Time12:30 MDT
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo

Aircraft

AircraftBeech B36TC
Tail NumberN6929B
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520 · Reciprocating

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 66 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
Wind200° @ 5 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point34 C
Altimeter30.13 inHg
Observation Time12:55
Weather SourceWFAC

Appendix: Source Data