Sunday, May 03, 2020

Loss of Control on Ground: Piper PA-18-150 Super Cub, N707VB; accident occurred April 25, 2020 at Skypark Airport (KBTF), Bountiful, Utah

Aviation Accident Final Report - National Transportation Safety Board 

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Salt Lake City, Utah

Investigation Docket - National Transportation Safety Board:

Location: Bountiful, UT

Accident Number: WPR20CA134
Date & Time: 04/25/2020, 1200 MDT
Registration: N707VB
Aircraft: Piper PA18
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 Minor
Flight Conducted Under: Part 91: General Aviation - Personal 


The pilot reported that she aborted the first landing due to the wind changing direction and slight gusts. During the rollout after the second landing, the pilot applied brakes as the wind simultaneously shifted and lifted the tail upward, which resulted in the propeller striking the runway and the airplane coming to rest in a nose-low attitude. Shortly after, another wind gust lifted the tail, which caused the airplane to flip over. The right-wing lift strut, rudder, and vertical stabilizer were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions 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 directional control during the landing roll in gusting wind conditions, which resulted in a roll-over.


Aircraft Directional control - Not attained/maintained
Personnel issues Aircraft control - Pilot
Environmental issues Gusts - Effect on operation

Factual Information

History of Flight

Landing-landing roll Other weather encounter
Landing-landing roll Loss of control on ground (Defining event)
Landing-landing roll Nose over/nose down

Pilot Information

Certificate: Private
Age: 65, Female
Airplane Rating(s): Single-engine Land
Seat Occupied: Front
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 08/10/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 07/12/2019
Flight Time:  1274 hours (Total, all aircraft), 1193 hours (Total, this make and model), 7 hours (Last 90 days, all aircraft), 6 hours (Last 30 days, all aircraft), 4 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: Piper
Registration: N707VB
Model/Series: PA18 150
Aircraft Category: Airplane
Year of Manufacture: 1956
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 18-4595
Landing Gear Type: Tailwheel
Seats: 2
Date/Type of Last Inspection: 04/20/2019, Annual
Certified Max Gross Wt.: 1750 lbs
Time Since Last Inspection: 25 Hours
Engines:1 Reciprocating 
Airframe Total Time: 4004.3 Hours as of last inspection
Engine Manufacturer: Lycoming
ELT: Installed, activated, did not aid in locating accident
Engine Model/Series: O-320-B2B
Registered Owner: Wild Thing Aviation LLC
Rated Power: 160 hp
Operator: On file
Operating Certificate(s) Held: None 

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: KSLC, 4225 ft msl
Distance from Accident Site: 5 Nautical Miles
Observation Time: 1754 UTC
Direction from Accident Site:200° 
Lowest Cloud Condition: Few / 9000 ft agl
Visibility:  10 Miles
Lowest Ceiling: Broken / 24000 ft agl
Visibility (RVR):
Wind Speed/Gusts: 9 knots /
Turbulence Type Forecast/Actual:
Wind Direction: 180°
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.22 inches Hg
Temperature/Dew Point: 19°C / -1°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Brigham City, UT (BMC)
Type of Flight Plan Filed: None
Destination: Bountiful, UT (BTF)
Type of Clearance: None
Departure Time: 1122 MDT
Type of Airspace: Class G

Airport Information

Airport: SKYPARK (BTF)
Runway Surface Type: Asphalt
Airport Elevation: 4237 ft
Runway Surface Condition: Dry
Runway Used: 35
IFR Approach: None
Runway Length/Width: 4634 ft / 70 ft
VFR Approach/Landing: Full Stop; Traffic Pattern

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Minor
Latitude, Longitude: 40.863889, -111.927500 (est)

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