Tomahawk Regional Airport
Aircraft Accident/Incident Report

Tomahawk, Wisconsin 54487
Sunday, July 27, 1997 13:20 CDT

NTSB Narrative Summary Released at Completion of Accident

During the aerobatic routine, two snap rolls to the right were accomplished. At the end of the second roll, the pilot experienced a sharp roll to the left. After leveling out the pilot complained of no elevator control. Altitude could not be maintained and, with the engine at full power, the airplane impacted into trees. The postaccident examination shows no mechanical defects that could not be attributed to the loss of control. Engine and flight control continuity checks normal. Evidence shows engine was running at a high power setting consistent with the pilot's account.

NTSB Probable Cause Narrative

The pilot encountered a tailplane stall. The factors involved were the pilot conducted a low altitude flight maneuver and encountered engine torque effect.

Event Information

Type of Event Accident
Event Date 7/27/1997
Event Day of the Week Sunday
Time of Event 1320
Event Time Zone Central Daylight Time
Event City TOMAHAWK
Event State WISCONSIN
Event Country --
Zipcode of the event site 54487
Event Date Year 1997
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport TOMAHAWK REGIONAL
Event Location Nearest Airport ID WI46
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 1486
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1249 Central Daylight Time
Direction of event from weather observation facility (degrees) 55
Weather Observation Facility ID RHI
Elevation of weather observation facility 1624
Distance of event from weather observation facility (units?) 16
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 10000
Lowest Non-Ceiling Height 3500
Sky/Lowest/Cloud Conditions Scattered
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) 28
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 3419
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1103
NTSB Notification Source --
NTSB Notification Date Jul 27 1997 12:00AM
NTSB Notification Time 1804
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:24PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N774HB
NTSB Number CHI97LA225
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Sorrell
Aircraft Model SNS-7
Aircraft Series Identifier SNS-7
Aircraft Serial Number 204
Certified Max Gross Weight 2050
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 May 15 1997 12:00AM
Airframe hours since last inspection 19
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name GERALD J. HAGGERTY
Aircraft Owner Street Address P.O. BOX 198
Aircraft Owner City ALTUS
Aircraft Owner State AR
Aircraft Owner Country
Aircraft Owner Zipcode 72821
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) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code T08
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code T08
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 27
Runway Length 4000
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --