Friday, June 26, 2020

Hard Landing: Sonex Onex, N951X; Accident occurred June 25, 2020 at Anoka County-Blaine Airport (KANE), Minneapolis, Minnesota

Aviation Accident Final Report - National Transportation Safety Board

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Minneapolis, Minnesota

Investigation Docket - National Transportation Safety Board:

Location: Minneapolis, Minnesota 
Accident Number: CEN20CA251
Date & Time: June 25, 2020, 11:45 Local
Registration: N951X
Aircraft: SONEX ONEX
Aircraft Damage: Substantial
Defining Event: Hard landing
Injuries: 1 None
Flight Conducted Under: Part 91: General aviation - Personal


According to the pilot, he departed in a single-seat homebuilt airplane; however, the airplane did not feel "stable", so he elected to abort the takeoff. During touchdown, the airplane's nose landing gear hit the runway first. After the nose landing gear struck the runway, the rudder was jammed, and the airplane departed the runway surface. The airplane struck a runway light before coming to a stop. Examination of the airplane found that firewall damage had impacted and jammed the nosewheel steering and rudder controls. Damage to the airplane's left-wing leading edge, and substantial damage to the left horizontal stabilizer, and elevator were also noted.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's hard landing on the airplane's nosewheel, which jammed the steering, and resulted in a runway excursion and impact with runway lights.


Personnel issues Aircraft control - Pilot
Aircraft Landing flare - Incorrect use/operation

Factual Information

History of Flight

Takeoff-rejected takeoff Miscellaneous/other
Landing-flare/touchdown Hard landing (Defining event)
Landing-flare/touchdown Collision with terr/obj (non-CFIT)

Pilot Information

Certificate: Commercial 
Age: 82
Airplane Rating(s): Single-engine land
Seat Occupied: Single
Other Aircraft Rating(s): None 
Restraint Used:
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Sport pilot With waivers/limitations
Last FAA Medical Exam: December 14, 2006
Occupational Pilot: No
Last Flight Review or Equivalent: June 2, 2020
Flight Time: 884 hours (Total, all aircraft), 5.3 hours (Total, this make and model), 849 hours (Pilot In Command, all aircraft), 1.2 hours (Last 90 days, all aircraft), 1.2 hours (Last 30 days, all aircraft)

Aircraft and Owner/Operator Information

Aircraft Make: SONEX 
Registration: N951X
Model/Series: ONEX 
Aircraft Category: Airplane
Year of Manufacture: 2017 
Amateur Built: Yes
Airworthiness Certificate: Experimental (Special) 
Serial Number: ONX0028
Landing Gear Type: Tricycle 
Seats: 1
Date/Type of Last Inspection: September 23, 2019 Condition
Certified Max Gross Wt.:
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 9 Hrs at time of accident
Engine Manufacturer: Revmaster
ELT: Not installed 
Engine Model/Series: 2300
Registered Owner: 
Rated Power:
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation: KANE
Distance from Accident Site:
Observation Time: 11:51 Local
Direction from Accident Site:
Lowest Cloud Condition: Scattered / 25000 ft AGL 
Visibility 10 miles
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: / 
Turbulence Type Forecast/Actual:  /
Wind Direction:
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 29.92 inches Hg 
Temperature/Dew Point: 27°C / 11°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Minneapolis, MN (ANE)
Type of Flight Plan Filed: None
Destination: Minneapolis, MN (ANE)
Type of Clearance: VFR
Departure Time: Type of Airspace: 

Airport Information

Airport: Anoka County-Blaine Airport ANE
Runway Surface Type: Asphalt
Airport Elevation: 912 ft msl
Runway Surface Condition: Dry
Runway Used: 27
IFR Approach: None
Runway Length/Width: 5000 ft / 100 ft 
VFR Approach/Landing: Precautionary landing

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries:
Aircraft Fire: None
Ground Injuries: N/A 
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 45.145278,-93.211944

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