Saturday, December 26, 2020

Aerodynamic Stall/Spin: Glasair Sportsman GS-2, N24EP; accident occurred November 09, 2019 near Huntsville Municipal Airport (H34), Madison County, Arkansas

Aviation Accident Final Report - National Transportation Safety Board

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; Little Rock, Arkansas

Investigation Docket - National Transportation Safety Board:

Location: Huntsville, Arkansas
Accident Number: GAA20CA064
Date & Time: November 9, 2019, 09:45 Local
Registration: N24EP
Aircraft: New Glasair SPORTSMAN GS-2 
Aircraft Damage: Substantial
Defining Event: Aerodynamic stall/spin
Injuries: 1 Minor, 1 None
Flight Conducted Under: Part 91: General aviation - Personal


The pilot reported that, during the takeoff roll from a wet, turf runway, the airplane encountered mud and veered left. He applied aft pressure to the stick, and the airplane climbed into ground effect. The pilot pulled up and attempted to climb out of ground effect, but the airplane descended and impacted trees. The airplane sustained substantial damage to both wings and the fuselage. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain proper pitch control during takeoff from a muddy, turf runway and his exceedance of the airplane's critical angle of attack during the initial climb, which resulted in an aerodynamic stall. 


Aircraft Pitch control - Incorrect use/operation
Aircraft Angle of attack - Not attained/maintained
Personnel issues Aircraft control - Pilot
Environmental issues Wet surface - Effect on operation
Environmental issues Tree(s) - Contributed to outcome

Factual Information

History of Flight

Takeoff Aerodynamic stall/spin (Defining event)
Takeoff-rejected takeoff Nose over/nose down

Pilot Information

Certificate: Private 
Age: 57, Male
Airplane Rating(s): Single-engine land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used: 3-point
Instrument Rating(s): Airplane 
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 With waivers/limitations
Last FAA Medical Exam: November 13, 2018
Occupational Pilot: No 
Last Flight Review or Equivalent: September 9, 2019
Flight Time: (Estimated) 711 hours (Total, all aircraft), 32 hours (Total, this make and model), 711 hours (Pilot In Command, all aircraft), 32 hours (Last 90 days, all aircraft), 32 hours (Last 30 days, all aircraft), 2 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: New Glasair
Registration: N24EP
Model/Series: SPORTSMAN GS-2 No Series 
Aircraft Category: Airplane
Year of Manufacture: 2018
Amateur Built: Yes
Airworthiness Certificate: Experimental (Special) 
Serial Number: 7466
Landing Gear Type: Tailwheel
Seats: 4
Date/Type of Last Inspection: May 1, 2019 Condition 
Certified Max Gross Wt.: 2500 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 62 Hrs at time of accident
Engine Manufacturer: Lycoming
ELT: C126 installed, activated, did not aid in locating accident
Engine Model/Series: YIO-390-EXP
Registered Owner: 
Rated Power: 210 Horsepower
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation: KASG, 1353 ft msl 
Distance from Accident Site: 18 Nautical Miles
Observation Time: 15:48 Local
Direction from Accident Site: 287°
Lowest Cloud Condition: Clear 
Visibility: 10 miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 10 knots / 15 knots 
Turbulence Type Forecast/Actual:  /
Wind Direction: 230°
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 30.2 inches Hg
Temperature/Dew Point: 10°C / 3°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Huntsville, AR (H34)
Type of Flight Plan Filed: None
Destination: Lakeview, AR (3M0)
Type of Clearance: None
Departure Time: 09:45 Local
Type of Airspace: Class G

Airport Information

Airport: Huntsville Muni H34
Runway Surface Type: Grass/turf
Airport Elevation: 1747 ft msl 
Runway Surface Condition: Soft; Wet
Runway Used: 21
IFR Approach: None
Runway Length/Width: 1250 ft / 60 ft 
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: 1 None 
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Minor, 1 None
Latitude, Longitude: 36.078056,-93.754997(est)

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