Greater Rockford Airport
Aircraft Accident/Incident Report

Adeline, Illinois 61039
Friday, September 12, 1997 18:58 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot departed in the experimental amateur built Skybolt from Rockford for a local flight. Witnesses reported seeing the aircraft fly straight up into the sky, roll over onto its back, and start spiraling towards the ground until impacting the ground. The propeller was twisted and had leading edge nicks.

NTSB Probable Cause Narrative

The pilot's failure to maintain aircraft control for undetermined reasons.

Event Information

Type of Event Accident
Event Date 9/12/1997
Event Day of the Week Friday
Time of Event 1858
Event Time Zone Central Daylight Time
Event City ADELINE
Event State ILLINOIS
Event Country --
Zipcode of the event site 61039
Event Date Year 1997
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport GREATER ROCKFORD AIRPORT
Event Location Nearest Airport ID RFD
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 15
Degrees magnetic from airport 315
Airport Elevation 736
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1855 Central Daylight Time
Direction of event from weather observation facility (degrees) 135
Weather Observation Facility ID RFD
Elevation of weather observation facility 742
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
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) 21
Dew Point at event time (in degress fahrenheit) 10
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Unknown
Wind Speed (knots) 3
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 1317
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1945
NTSB Notification Source --
NTSB Notification Date Sep 12 1997 12:00AM
NTSB Notification Time 2030
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:33PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N79DK
NTSB Number CHI97FA293
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 KEAGGY-DAVID
Aircraft Model SKYBOLT
Aircraft Series Identifier SKYBOLT
Aircraft Serial Number 055
Certified Max Gross Weight 2100
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 100 Hour
Date of Last Inspection Sep 3 1994 12:00AM
Airframe hours since last inspection 46
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name GEORGE E. MASTEN III
Aircraft Owner Street Address 2138 FOREST VIEW ROAD
Aircraft Owner City ROCKFORD
Aircraft Owner State IL
Aircraft Owner Country
Aircraft Owner Zipcode 61108
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 No
Departure Airport Code RFD
Departure City ROCKFORD
Departure State IL
Departure Country
Departure Time 1833
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 19
Runway Length 8199
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --