Tuesday, July 13, 2021

Loss of Control on Ground: Just JA30 SuperSTOL, N17VP; accident occurred July 11, 2021 in May, Lemhi County, Idaho






Aviation Accident Final Report - National Transportation Safety Board

The National Transportation Safety Board did not travel to the scene of this accident. 

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; Boise, Idaho

Investigation Docket - National Transportation Safety Board: https://data.ntsb.gov/Docket

AvStar Inc


Location: May, Idaho
Accident Number: WPR21LA267
Date and Time: July 11, 2021, 15:00 Local 
Registration: N17VP
Aircraft: JUST AIRCRAFT LLC JA30 SUPERSTOL
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 None
Flight Conducted Under: Part 91: General aviation - Personal

Analysis

The pilot in the tailwheel-equipped airplane reported that, during the landing roll on an unimproved dirt surface, the airplane veered to the right and he subsequently reduced the throttle to the idle position. About 40 knots ground speed, he made a full left rudder pedal application, but the airplane continued to the right. The pilot then applied left brake application and the airplane veered aggressively to the left and ground looped. The right main landing gear collapsed, and the right wing struck the ground, which resulted in substantial damage to the right aileron. 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, which resulted in a ground-loop and collision with terrain.

Findings

Personnel issues Aircraft control - Pilot
Aircraft Directional control - Not attained/maintained

Factual Information

History of Flight

Landing Loss of control on ground (Defining event)

Pilot Information

Certificate: Commercial 
Age: 25, Male
Airplane Rating(s): Single-engine land; Multi-engine land
Seat Occupied: Left
Other Aircraft Rating(s): None 
Restraint Used: 3-point
Instrument Rating(s): Airplane 
Second Pilot Present: Yes
Instructor Rating(s): None 
Toxicology Performed:
Medical Certification: Class 1 Without waivers/limitations
Last FAA Medical Exam: February 11, 2021
Occupational Pilot: No Last Flight Review or Equivalent: June 3, 2021
Flight Time: (Estimated) 388 hours (Total, all aircraft), 4.4 hours (Total, this make and model), 251.5 hours (Pilot In Command, all aircraft), 48.9 hours (Last 90 days, all aircraft), 18.8 hours (Last 30 days, all aircraft), 1.8 hours (Last 24 hours, all aircraft)

Pilot Information

Certificate: Airline transport; Commercial
Age: 64, Male
Airplane Rating(s): Single-engine land; Single-engine sea; Multi-engine land
Seat Occupied: Right
Other Aircraft Rating(s): Glider 
Restraint Used: 3-point
Instrument Rating(s): Airplane 
Second Pilot Present: Yes
Instructor Rating(s): None
Toxicology Performed:
Medical Certification: Class 1 With waivers/limitations
Last FAA Medical Exam: February 4, 2021
Occupational Pilot: Yes
Last Flight Review or Equivalent: January 7, 2021
Flight Time: (Estimated) 9950 hours (Total, all aircraft), 10 hours (Total, this make and model), 6300 hours (Pilot In Command, all aircraft), 1 hours (Last 90 days, all aircraft), 1 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: JUST AIRCRAFT LLC 
Registration: N17VP
Model/Series: JA30 SUPERSTOL 
Aircraft Category: Airplane
Year of Manufacture: 2016
Amateur Built:
Airworthiness Certificate: Experimental (Special) 
Serial Number: JA433-01-15
Landing Gear Type: Tailwheel 
Seats: 2
Date/Type of Last Inspection: May 18, 2021 Condition
Certified Max Gross Wt.: 1320 lbs
Time Since Last Inspection: 1.3 Hrs
Engines: 1 Reciprocating
Airframe Total Time: 69.9 Hrs at time of accident
Engine Manufacturer: Rotax
ELT: C91A installed, not activated 
Engine Model/Series: 914
Registered Owner: 
Rated Power: 115 Horsepower
Operator: 
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC) 
Condition of Light: Day
Observation Facility, Elevation: KOMK,5040 ft msl
Distance from Accident Site: 19 Nautical Miles
Observation Time: 14:53 Local
Direction from Accident Site: 285°
Lowest Cloud Condition: Clear 
Visibility 10 miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 7 knots / 
Turbulence Type Forecast/Actual:  /
Wind Direction: 340° 
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 30.03 inches Hg 
Temperature/Dew Point: 31°C / 8°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: May, ID (0ID2)
Type of Flight Plan Filed: None
Destination: May, ID
Type of Clearance: None
Departure Time: 16:30 Local
Type of Airspace: Class G

Airport Information

Airport: FLYING JOSEPH RANCH 0ID2 
Runway Surface Type: Dirt; Grass/turf
Airport Elevation: 5642 ft msl 
Runway Surface Condition: Dry
Runway Used: 33
IFR Approach: None
Runway Length/Width: 1500 ft / 50 ft
VFR Approach/Landing: Full stop

Wreckage and Impact Information

Crew Injuries: 1 None 
Aircraft Damage: Substantial
Passenger Injuries:
Aircraft Fire: None
Ground Injuries:
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 44.442031,-113.77717

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