Wauchula Municipal Airport
Aircraft Accident/Incident Report

Wauchula, Florida 33873
Sunday, January 21, 2007 9:10 EST

NTSB Narrative Summary Released at Completion of Accident

According to the pilot, during a normal soft field landing the right main gear collapsed about 20 yards into the landing roll and the airplane came to an abrupt stop. Examination of the airplane by an FAA Inspector found wrinkling of the metal skin between the front and rear spars on the right wing. Further examination found the right main gear strut fractured and separated near its attachment point to the airframe. The landing gear strut was removed and sent to the NTSB Materials Laboratory for further examination. The examination found that the fractures were on slant planes and had deformation adjacent to the fractures consistent with overstress fracture in bending. Corrosion deposits on the fracture surface were orange in color consistent with post-fracture oxidation. No significant preexisting corrosion was observed. The right main gear collapsed following a hard landing.

NTSB Probable Cause Narrative

The pilot's improper flare which resulted in a hard landing and overload failure of the right landing gear strut.

Event Information

Type of Event Accident
Event Date 1/21/2007
Event Day of the Week Sunday
Time of Event 910
Event Time Zone Eastern Standard Time
Event City Wauchula
Event State FLORIDA
Event Country --
Zipcode of the event site 33873
Event Date Year 2007
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 273032N
Event Location Longitude 0815230W
Event Location Airport Wauchula Municipal Airport
Event Location Nearest Airport ID KCHN
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport --
Airport Elevation 106
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 852 Eastern Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID BOW
Elevation of weather observation facility 125
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4800
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 12
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 100
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.2
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 22775
NTSB Notification Source FAA Com Center
NTSB Notification Date Jan 21 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Dec 20 2007 6:59AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Tampo FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3209X
NTSB Number ATL07LA033
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Ayres
Aircraft Model S2R-G6
Aircraft Series Identifier --
Aircraft Serial Number G6-128
Certified Max Gross Weight 4500
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name AG Flying Service, Inc.
Aircraft Owner Street Address RR 2 Box 13
Aircraft Owner City Samson
Aircraft Owner State AL
Aircraft Owner Country USA
Aircraft Owner Zipcode 36477
Operator is an individual? No
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 RWYG
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation Agriculture
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) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code CHN
Departure City Wauchula
Departure State FL
Departure Country USA
Departure Time 830
Departure Time Zone EST
Destination Same as Local Flt crash at destination city
Destination Airport Code CHN
Destination City Wauchula
Destination State FL
Destination Country USA
Specific Phase of Flight Landing - roll
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 29 2007 3:45PM
User who most recently changed record KENJ
Since inspection or accident --
Event Location Runway Number and Location 36
Runway Length 4000
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --