SERVICE MANUAL & ICA
WIPLINE 13000 FLOATS
Page 12
Revision H
P/N 1002548
1.1 AIRPLANE
The DHC-6 Twin Otter is a high wing, all metal, twin turbo prop aircraft originally manufactured by de Havilland
Canada and currently produced by Viking Air. As part of the float installation the following changes are made to
the landplane:
1. The hydraulic landing gear retraction system components and cockpit controls are added*
2. The landing gear emergency gear operation hand pump and system are added*
3. Auxiliary Vertical Fins are added
*
Note:
Amphibian float models only
1.2 FLOATS
The model 13000 seaplane or amphibious float is an all aluminum-constructed float with watertight compartments.
The actual displacement in fresh water for each float is 12844 pounds buoyancy for the seaplane and 12442
pounds buoyancy for the amphibian. The amphibian float is geometrically the same as the seaplane except for the
addition of landing gear.
The main landing gear has dual 8:50 x 10 8-ply tires and the nose landing gear has one 6.00 x 6 8-ply tire. The
gear system is hydraulically actuated and driven by two hydraulic pumps. Brakes are hydraulic and have a caliper
on each main wheel for a total of four brakes.
Steering on land is accomplished by differential braking. The nose wheels are full castering.
Access to the float interior is accomplished by removing covers on the top deck and six covers inside the wheel
well. When necessary, water inside the float hulls may be removed through pump-out cups located on the
outboard edge of each float top skin.
FLOAT HULL MAINTENANCE
GENERAL
The float structure side, top skins, and bottom skins are 6061-T6 aluminum and extrusions are 6061-T6
aluminum, (keel, chine, etc.). Skins are alodined and primed after being cleaned and acid-etched. Exterior is
finished with a urethane color paint or equivalent.
1.3 TOWING
When towing the amphibian aircraft, 2 lugs are provided on the lower forward side of the nose spring.
On land, a rigid “V” frame can be fabricated to attach to these lugs for towing the aircraft with a tractor. Lake & Air
Training and Pilot Shop has this tow bar available for purchase.
