Boone Municipal Airport
Aircraft Accident/Incident Report

Boone, Iowa 50036
Sunday, April 23, 2000 16:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The airplane sustained substantial damage on impact with a fence during takeoff roll. The pilot and passenger were uninjured. The pilot stated, 'Taxing to the end of the runway was uneventful and there was no indication that the wind was excessive. I performed my run-up checks, applied full power and began my takeoff roll. The tail came up normally and I continued the roll. All of a sudden I was hit by a huge gust that got under the right wing which nearly tipped the plane onto the left wing. I gained enough control to keep the airplane upright but my direction changed to where I was heading left toward the Army National Guard fence. The right wing hit the fence and the aircraft came to an abrupt stop.' The pilot further stated, 'Right wing tip 3 feet broken including front [and] rear spar when wing hit chain link fence.' A witness stated, 'Plane, on taxi for take-off on sod runway, was blown-off course by a strong gust. It rolled over 2 or 3 times into Nat Gd [National Guard] fence.' At 1605, the Boone Municipal Airport, Boone, Iowa, wind was 100 degrees at 19 knots gusts to 24 knots.

NTSB Probable Cause Narrative

the pilot not maintaining directional control. Factors were the gusts and the fence.

Event Information

Type of Event Accident
Event Date 4/23/2000
Event Day of the Week Sunday
Time of Event 1600
Event Time Zone Central Daylight Time
Event City BOONE
Event State IOWA
Event Country --
Zipcode of the event site 50036
Event Date Year 2000
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport BOONE MUNICIPAL AIRPORT
Event Location Nearest Airport ID BNW
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 1160
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1605 Central Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID BNW
Elevation of weather observation facility 1160
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 8000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 25
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 100
Variable Wind Indicator Unknown
Wind Speed (knots) 19
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 24
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 448
NTSB Notification Source FAA
NTSB Notification Date Apr 26 2000 12:00AM
NTSB Notification Time 1415
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record May 25 2001 4:45AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N899TC
NTSB Number CHI00LA122
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cunningham
Aircraft Model PIETENPOL AIRCAMPER
Aircraft Series Identifier PIETENPOL
Aircraft Serial Number TIM-4
Certified Max Gross Weight 1600
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 16 1999 12:00AM
Airframe hours since last inspection 65
Airframe Hours 65
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name TIMOTHY B. CUNNINCHAM
Aircraft Owner Street Address 1117 SE 80TH STREET
Aircraft Owner City RUNNELLS
Aircraft Owner State IA
Aircraft Owner Country
Aircraft Owner Zipcode 50237
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code BNW
Departure City
Departure State
Departure Country
Departure Time 1600
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code Y76
Destination City DES MOINES
Destination State IA
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 25 2001 4:09AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 2
Runway Length 3190
Runway Width 280
Sight Seeing flight No
Air Medical Flight No
Medical Flight --