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Section 4 - Performance
The takeoff distance (ground run in feet) with full throttle, flaps deflected 20° and a takeoff safety speed of 53 mph can be determined from the following data. The takeoff distances are for a hard surface runway and/or waterway at sea level conditions. Soft ground and/or wet grass will increase the land takeoff roll distance by approximately 15% from the ground roll distance for land and pilots should satisfy themselves that adequate runway is available to cover these conditions.
A headwind of 10% of takeoff speed can decrease the takeoff roll by 19% and a tailwind that is 10% of takeoff speed can increase the distance for takeoff by 21%
Ground Take-off: Before commencing the takeoff roll, check that the gear is in the fully “down” and locked position. To do this, check that both landing gear lights are lit. After takeoff, retract the gear only after the takeoff safety speed is reached and the aircraft is established in the climb.
- Ground roll for takeoff to reach 1.2Vs1 = 270 ft.
- Distance to clear 50 foot obstacle at 58 MPH IAS (Vx), 20 degrees of flaps = 1050 ft.
- Distance to clear 50 foot obstacle at 63 MPH IAS (Vy), 10 degrees of flaps = 1100 ft.
Water Take-off: The aircraft may be taxied slowly in the water with the gear in the down position, when transitioning from land orwater. Check that the gear is retracted before commencing the takeoff run. Both green landing gear position lights should be lit.
- Takeoff roll in water to reach 1.2Vs1 = 430 ft
- Distance to clear 50 foot obstacle at 58 MPH IAS (Vx), 20 degrees of flaps = 1100 ft
- Distance to clear 50 foot obstacle at 63 MPH IAS (Vy), 10 degrees of flaps = 1200 ft
- The landing distances (ground run in feet) have been calculated by using the gross weight of 1430 lbs. at sea level conditions.
- These distances are derived using the above minimum approach speed with 20° of flap and engine at idle. After touchdown maximum braking is used to bring the aircraft to a stop. These distances are for a hard level surface. Wet and/or slippery surfaces will increase these distances and pilots should satisfy themselves that adequate runway length is available to cover these conditions.
- In the case of water landings, full reduction of power after touchdown and application of full up elevator below 25 mph will result in best speed reduction and reduced landing distance covered.
Ground Landing: Check that the gear is fully extended in the “down” and locked position. To do this, check that the landing gear position lights are lit. In the event that the gear cannot be extended, use a grass runway and land the aircraft on the hull. Landing gear up on a smooth grass runway minimizes the potential for damage if the gear cannot be fully extended.
- Landing roll on ground = 320 ft
- Landing distance to clear 50 foot obstacle at 55 MPH IAS, 20 degrees of flaps = 850 ft.
Water Landing: Check that the gear is fully retracted and locked in the “up” position with the position lights lit.
- Landing roll on water = 350 ft
- Landing distance to clear 50 foot obstacle at 55 MPH IAS, 20 degrees of flaps = 860 ft
This chart assumes that maximum takeoff power is used.
70 – 105 MPH (914UL – Elite Configuration)