Twin Otter - Hydraulic Wheel Ski
Building something that is made to take a punishment requires sound engineering and a rigorous belief in quality. Our hydraulic wheel skis have taken the Twin Otter to some of the harshest cold climate locations in the world and provided a safe and reliable way to land and take off no matter the conditions. The Twin Otter’s versatility and maneuverability coupled with the Genaire hydraulically actuated wheel ski makes landing on unprepared snow or ice a reality and has allowed for new exploration, military support and rescue missions.
Since the 70’s Genaire has been performing Repair and Overhaul service on skis and began manufacturing in 1986. Genaire manufactures skis with a “wheel through” design which allows for the selection of either a ski landing or a normal wheel landing depending on conditions.
When landing on skis the aircrafts hydraulic system actuates a sling on each ski, drawing it down under the wheel creating the flat ski surface.
When the wheel landing position is selected, the sling moves up and forward, allowing the wheel to descend to the limit of its travel, and positioning the ski for maximum clearance of the runway.
The Genaire manufactured skis are self-trimming in flight, using a rigging system of cables, links and shock units. In addition, the main skis employ an attitude compensating mechanism. When properly installed, these systems maintain the skis in a level attitude in the “ski-landing” position and raised clear of the wheels the “wheel landing” position.
Along with Manufacturing Wheel Skis, Genaire also provides repair and overhaul services and maintains a full inventory of spare parts and assemblies which are available to all our customers. Trained technicians and Engineering staff are on hand to support customers with any technical issues they experience.
See more info on our Repair and Overhaul page.
History of the Hydraulic Wheel Ski
The lightweight aluminum construction hydraulically actuated wheel penetrating ski was originally designed by Bristol Aerospace in the 1960’s. Genaire purchased the technical information and manufacturing rights of the 3000 nose ski model and the 5500 main skis in 1985.
The ski set consists of the following:
- P/N 258-24003-1 Nose Ski
- P/N 258-24002-11 LH Main Ski
- P/N 258-24002-12 RH Main Ski
In 1986, Genaire received Transport Canada approval for the manufacture and repair of the same hydraulic wheel skis. These skis are approved for use on the Twin Otter 100 thru 400 series aircraft under DOT A-82.
For over 50 years Genaire has been supporting Twin Otter operators across Canada including the Canadian Department of National Defence, Viking Air as well as other Arctic/Antarctic operators.