Wittman Regional Airport
Aircraft Accident/Incident Report

Oshkosh, Wisconsin 54901
Sunday, July 1, 2012 11:36 CDT

NTSB Narrative Summary Released at Completion of Accident

During the landing roll with about 5 knots of crosswind, the airplane turned to the left, and the pilot tried to correct the turn by adding control inputs. However, the airplane ground looped to the left and came to rest on the side of the runway. The airplane sustained substantial damage to its wings and fuselage. The pilot reported that he had landed the airplane in the past with much stronger crosswinds and felt comfortable with the conditions at the time.

NTSB Probable Cause Narrative

The pilot's loss of directional control while landing with a crosswind.

Event Information

Type of Event Accident
Event Date 7/1/2012
Event Day of the Week Sunday
Time of Event 1136
Event Time Zone Central Daylight Time
Event City Oshkosh
Event State WISCONSIN
Event Country --
Zipcode of the event site 54901
Event Date Year 2012
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 435904N
Event Location Longitude 0883325W
Event Location Airport Wittman Regional
Event Location Nearest Airport ID OSH
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 --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1135 Central Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID KOSH
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 90
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 30274
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Sep 26 2012 8:07PM
User who most recently changed record snyg
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N500L
NTSB Number CEN12CA409
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name WILKINSON LORIN L
Aircraft Model HATZ XB-II
Aircraft Series Identifier --
Aircraft Serial Number 500
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
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 Conditional
Date of Last Inspection Nov 1 2011 12:00AM
Airframe hours since last inspection --
Airframe Hours 231
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type C91-A
Aircraft Owner Name WUEST LUKE S
Aircraft Owner Street Address --
Aircraft Owner City PICKETT
Aircraft Owner State WI
Aircraft Owner Country USA
Aircraft Owner Zipcode 54964
Operator is an individual? Yes
Operator Name WUEST LUKE S
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City PICKETT
Operator State WI
Operator Country USA
Operator Zip code 54964
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
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 OSH
Departure City Oshkosh
Departure State WI
Departure Country USA
Departure Time 1110
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code OSH
Destination City Oshkosh
Destination State WI
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 19 2012 1:59PM
User who most recently changed record hatc
Since inspection or accident Time of Accident
Event Location Runway Number and Location 18
Runway Length 8002
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --