CHI07LA302

NTSB accident investigation · Siebert RV-9A · Barton City, MI · September 20, 2007

Accident · Serious injuriesLimited investigationFinal report
Date
September 20, 2007, 16:00 local (20:00 UTC)
Place
Barton City, MI
Injuries
2 serious
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N3653Siebert RV-9A
Weather
Visual (VMC) · Day
Status
Completed · report August 28, 2008
Report
Approved by Office Director
Parties
Federal Aviation Administration, Grand Rapids FSDO
FAA report
20070920021889A
Case key
66993

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 adequate airspeed and aircraft control during initial climb after takeoff. Contributing to the accident was the gusting wind condition.

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.

In flight encounter with weatherTakeoff - initial climb
Weather condition - gustsFactor
Loss of control - in flightTakeoff - initial climb
Airspeed - not maintainedPilot in commandCause
Aircraft control - not maintainedPilot in commandCause
Stall - encountered
Altitude - low
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - ground

Analysis

The airplane departed to the northwest from a private grass airstrip situated behind the pilot's residence. The passenger reported that shortly after takeoff the airplane encountered a large wind gust that pushed the airplane to the left (southwest). After encountering a second wind gust, the airplane banked sharply and then descended vertically into trees and terrain. The passenger recalled that the airstrip's windsock did not indicate that there was significant wind prior to the accident flight. The pilot had no recollection of the accident flight. A weather observation station located about 16 nm south-southeast of the accident site reported the wind was from the east at 5 knots with no gusts. Another weather observation station located about 23 nm west of the accident site reported the wind was from the west-southwest at 4 knots, gusting to 10 knots.

Factual narrative

On September 20, 2007, around 1600 eastern daylight time, an experimental amateur-built Siebert RV-9A, N3653, owned and piloted by a private pilot, was substantially damaged when it impacted terrain shortly after takeoff from a private airstrip near Barton City, Michigan. Visual meteorological conditions prevailed at the time of the accident. The personal flight was operating under the provisions of 14 Code of Federal Regulations (CFR) Part 91 without a flight plan. The pilot and passenger sustained serious injuries. The local flight was originating at the time of the accident.

The airplane departed to the northwest from a private grass airstrip situated behind the pilot's residence. The northwest/southeast airstrip was about 1,160 feet long. The passenger reported that shortly after takeoff the airplane encountered a large wind gust that pushed the airplane to the left (southwest). After encountering a second wind gust, the airplane banked sharply and then descended vertically into trees and terrain. The passenger recalled that the airstrip's windsock did not indicate that there was significant wind prior to the accident flight. The pilot had no recollection of the accident flight.

A weather observation station located about 16 nm south-southeast of the accident site reported the wind was from the east at 5 knots with no gusts.

Another weather observation station located about 23 nm west of the accident site reported the wind was from the west-southwest at 4 knots, gusting to 10 knots.

Aircraft

Registration
N3653
Reported as
Siebert RV-9A
Category
Airplane, amateur-built
Serial number
90209
Airframe hours
86
Engine
Lycoming O-320-E2A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · August 1, 2007 · 86 hours before
Departed
PVT · Barton City, MI
Destination
PVT · Barton City, MI
Airport
PVT · Private Airstrip, runway 31, 1,161 × ft, grass/turf

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
54
Injuries
Serious
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
September 1, 2006
Seat
Left
Flight hours
144 total · 86 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 54 °F
Altimeter
30.20 inHg
Observed at
OSC, 16 nm away

FAA reports on this event · 1

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