265 Shannon Lane
Priest River ID 83856
TITLE: Supplemental Airplane Flight Manual
A-10060
03/04/15
Cessna 206 on Model 3400 Floats
REVISION: D
FAA Approved
AMPHIBIOUS FLOATS REMOVED FOR LANDPLANE OPERATIONS
When the floats (item 9 above) are replaced with landplane landing gear the
following items need to be changed. Other items listed above, including the
propeller and the H-models exhaust extension, can remain on the airplane.
4. Ventral fin removed.
5. Rudder trim bungee replaced.
6. Water rudder bellcranks removed.
7. Cowl flap rod extensions removed on models A through G.
8. Exhaust extensions removed on models A through G.
15. Elevator trim rigging adjusted to landplane.
16. Flap travel maximum set to 40 deg.
AMPHIBIOUS LANDING GEAR SYSTEM
The landing gear incorporated within the amphibious floats on this airplane
is a retractable, quadricycle type with two full swiveling nose (or bow)
wheels and two main wheels. Shock absorption is provided by air oil shock
struts for the main gear and composite leaf springs for the bow gear. Each
main wheel is equipped with a hydraulically-actuated disc-type brake.
Normal landing gear extension and retraction accomplished by hydraulic
actuators for each gear. The hydraulic system is powered by a reversible,
electrically-driven hydraulic pump located just forward of fuselage station
166.4. Hydraulic system fluid level should be checked at 25-hour intervals
by viewing the sight glass on the side of the pump. Fill to within ½” of the
top of the sight glass by removing the vented plug and using MIL-H-5606
hydraulic fluid. Hydraulic pump operation is initiated by moving the
landing gear switch on the gear control unit to either the up or down
position. The landing gear will travel to the position selected, cycling the
electrically-driven hydraulic pump. The pump is shut off by pressure
switches. When the pressure switch senses a certain amount of pressure in
the hydraulic line, which the electric pump is forcing fluid through, it will
send a signal to the motor relay shutting down the pump. The pressure
increases at the end of operation when all the actuators have traveled to the
end of their stroke. Eight position-indicator lights (four gear up and four
gear down) are provided to show landing gear position. An additional
indicator light shows that the landing gear pump motor is in operation. The
landing gear system is also equipped with an emergency hand pump with a
selector valve.
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