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Aviation safety reports, made easier to study

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NTSB Report

August 29, 2001 · Cessna 170A · N9791A

Chickaloon, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
August 29, 2001
Injury Outcomes
1 injury (1 serious injury), 2 uninjured
Location
Chickaloon, AK
Aircraft
Cessna 170A
Tail Number
N9791A
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
ANC01LA127

The commercial certificated pilot was departing his private airstrip on runway 24. The airstrip is 2,200 feet long, and is located at 1,875 feet msl. In a telephone conversation with the NTSB IIC, the pilot said he added full engine power, and pushed the carburetor heat control off when he began the takeoff run. The airplane lifted off to about 20 feet agl near the departure end of the runway. The pilot said the airplane did not seem to be climbing and he aborted the takeoff by closing the engine throttle and intentionally stalling the airplane into trees at the departure end of the runway. The airplane received damage to the wings, fuselage, and landing gear. The pilot said the weather conditions at the time of the accident were broken clouds about 6,000 feet; unlimited visibility; temperature about 62 degrees F; and light wind from 240 degrees. In the narrative portion of the NTSB Pilot/Operator Report submitted by the pilot, the pilot said the "carburetor heat control was out (heat was on)."

NTSB Probable Cause

The pilot's delay in aborting the takeoff. Factors in the accident were the presence of trees at the end of the departure path, and the pilot's improper use of the carburetor heat control.

Full Narrative

On August 28, 2001, about 2000 Alaska daylight time, a tundra tire-equipped Cessna 170A airplane, N9791A, sustained substantial damage during an aborted takeoff from a private airstrip, about 17 miles east-northeast of Chickaloon, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight when the accident occurred. The airplane was operated by the pilot. The commercial certificated pilot and one passenger were not injured; the remaining passenger received serious injuries. Visual meteorological conditions prevailed. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on August 29, the pilot reported he was departing his airstrip on runway 24 to transport his passengers to Anchorage, Alaska. The airstrip is 2,200 feet long by 70 feet wide, and is located at 1,875 feet msl on a 060/240 degree magnetic orientation. The pilot said he added full engine power, and pushed the carburetor heat control off when he began the takeoff run. The airplane lifted off to about 20 feet agl near the departure end of the runway. The pilot said the airplane did not seem to be climbing and he aborted the takeoff by closing the engine throttle and intentionally stalling the airplane into trees at the departure end of the runway. The rear seat passenger received a fractured wrist. The airplane received damage to the wings, fuselage, and landing gear. In the narrative portion of the Pilot/Operator Report (NTSB form 6120.1/2) submitted by the pilot on September 10, 2001, the pilot stated, in part: "...took runway 24 and applied full power. Carb heat was out (heat was on)." The pilot said the weather conditions at the time of the accident were broken clouds about 6,000 feet; unlimited visibility; temperature about 62 degrees F; and light wind from 240 degrees.

Flight

Event TypeAccident
Event Time20:00 AKDT
Nearest AirportFarrar'S Airstrip (0nm)
Runway24
Runway Length2200 ft
Runway Width70 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 170A
Tail NumberN9791A
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-300 · Reciprocating · 145
Seats4

People & Injuries

Injury Summary1 injury (1 serious injury), 2 uninjured
Fatal0
Serious1
Minor0
Uninjured2
Total3
Crew 1Age 75 · Second Class · None

Conditions

ConditionsVMC
LightDaylight
Wind240° @ 5 kt
Visibility10 sm
CeilingBroken clouds 6000 ft
Temperature / Dew Point63 F / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data