NTSB Final Report: Kolb Twinstar | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-07.07.25

Airborne-NextGen-07.08.25

AirborneUnlimited-07.09.25

Airborne-FlightTraining-07.10.25

AirborneUnlimited-07.11.25

Fri, Jul 19, 2024

NTSB Final Report: Kolb Twinstar

The Left Wheel Departed From The Left Strut. The Airplane Began Sliding On The Turf And Nosed Over

Location: Starbuck, Minnesota Accident Number: CEN23LA227
Date & Time: June 2, 2023, 14:50 Local Registration: N1025T
Aircraft: Kolb Twinstar Aircraft Damage: Substantial
Defining Event: Abnormal runway contact Injuries: 1 Serious, 1 Minor
Flight Conducted Under: Part 91: General aviation - Instructional

Analysis: The flight instructor and the pilot, who was also the builder of the airplane, were practicing soft field landings with the tailwheel-equipped experimental airplane. They performed two threepoint landings to the dry turf without incident. During touchdown on the third landing, with the pilot on the flight controls, the left wheel departed from the left strut. The airplane began sliding on the turf and nosed over, coming to rest inverted. The airplane sustained substantial damage to the fuselage, both wings, and the empennage.

A postaccident metallurgical examination of the left main landing gear revealed that it failed when the left axle fractured from bending overstress consistent with upward forces on the wheel and outward portion of the axle.

It is likely that the pilot executed an improper landing flare, which resulted in a hard landing that fractured the left axle in bending overstress, and a subsequent loss of control and nose over.

Probable Cause and Findings: The National Transportation Safety Board determines the probable cause(s) of this accident to be -- The pilot’s improper landing flare and hard landing, which resulted in the left axle fracturing from bending overstress.

FMI: www.ntsb.gov

Advertisement

More News

NTSB Final Report: Aviat A1

Airplane Bounced About 3 Ft Then Touched Back Down And Then, With No Brakes Applied, The Airplane Began Veering To The Left Analysis: The pilot entered the airport traffic pattern >[...]

ANN's Daily Aero-Linx (07.08.25)

Aero Linx: British Microlight Aircraft Association (BMAA) The primary focus within all aviation activity is SAFETY. In all aspects of our sport SAFETY must come first, whether it b>[...]

Classic Aero-TV: Fly Corvair’s Reliable Engine Alternative

From SnF25 (YouTube Edition): William Wynne Builds Practical Aircraft Engines on the Corvair Platform Seeking an affordable alternative to the traditional aircraft engine options, >[...]

ANN FAQ: Contributing To Aero-TV

How To Get A Story On Aero-TV News/Feature Programming How do I submit a story idea or lead to Aero-TV? If you would like to submit a story idea or lead, please contact Jim Campbel>[...]

Classic Aero-TV: CiES Fuel-Quantity and e-Throttle Systems Praised

From 2023 (YouTube Edition): Bridge of CiES CiES Inc. is a Bend, Oregon-based designer and manufacturer of modular embedded aircraft systems and sensors. The company’s fuel-l>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC