ANC06LA087

NTSB accident investigation · Kennedy Chinook Plus 2 · Willow, AK · July 2, 2006

Accident · Minor injuriesLimited investigationFinal report
Date
July 2, 2006, 06:45 local (14:45 UTC)
Place
Willow, AK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N9077MKennedy Chinook Plus 2
Weather
Visual (VMC) · Day
Status
Completed · report January 31, 2007
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Anchorage, FSDO-03
Case key
64088

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 pilot's failure to maintain sufficient airspeed to avoid an aerodynamic stall during takeoff/initial climb, which resulted in an uncontrolled descent and collision with trees. A factor associated with the accident was an inadvertent stall.

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 - initial climb
Airspeed(vs) - not maintainedPilot in commandCause
Stall/mush - inadvertentPilot in commandFactor
In flight collision with objectDescent - uncontrolled
Object - tree(s)

Analysis

The private pilot was conducting the first test flight of the experimental amateur-built airplane under Title 14, CFR Part 91. The pilot said he elected to takeoff from a dirt road near his house. He reported that when he applied takeoff power the airplane climbed steeply, and he was unable to get the nose down. He said he reduced engine power, and mushed the airplane into the trees at the side of the road. The airplane received substantial damage to the wings and fuselage. An FAA aviation safety inspector who examined the airplane after the accident, said he did not discover any preaccident mechanical anomalies. In his report to the NTSB, the pilot wrote, in part: "I believe I did a departure stall by letting it fly too soon."

Factual narrative

On July 2, 2006, about 0645 Alaska daylight time, a Kennedy Chinook Plus 2 experimental amateur-built airplane, N9077M, sustained substantial damage when it impacted trees, following a loss of control during takeoff-initial climb, about 6 miles east of Willow, Alaska. The airplane was being operated by the pilot as a visual flight rules (VFR) flight under Title 14, CFR Part 91, when the accident occurred. The solo private pilot was not injured. Visual meteorological conditions prevailed, and no flight plan was filed.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on July 13, the pilot stated he had just completed the amateur-built airplane, and elected to make the first test flight by taking off from a dirt roadway near his residence. He reported when he applied takeoff power the airplane climbed steeply, and he was unable to lower the nose. He said he reduced engine power, and the airplane settled into the trees alongside the roadway. He indicated the wings and fuselage received substantial damage during the landing.

On July 18, the IIC spoke with an FAA aviation safety inspector who examined the airplane after the accident. The inspector said he did not discover any preaccident mechanical anomalies with the airplane.

In a written statement dated July 16, contained in the NTSB Pilot/Operator Aircraft Accident Report, the pilot wrote that after takeoff he moved the stick forward to remain in ground effect, but could not get the tail to come up, and the airplane climbed steeply. He reported that his shoulder harness precluded him from being able to push the stick all the way forward. He noted that he reduced the throttle, and with full back stick, mushed the airplane into the trees at the side of the road. In the portion of the report titled: Recommendation (How Could This Accident Have Been Prevented), he wrote, in part: " I believe I did a departure stall by letting it fly too soon."

Aircraft

Registration
N9077M
Reported as
Kennedy Chinook Plus 2
Category
Airplane, amateur-built
Serial number
02272XS
Airframe hours
2
Engine
Rotax 912 UL, 80 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Rockne Kennedy
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · July 1, 2006 · 2 hours before
Departed
Willow, AK

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
52
Injuries
Minor
Certificate
Sport Pilot
Airplane ratings
Single-engine sea, Single-engine land
Medical
Sport pilot
Last flight review
June 1, 2006
Seat
Left
Flight hours
225 total · 0 in this make and model · 150 as pilot in command · 1 in the last 90 days · 1 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
63 °F