7-1 Most powered parachute incidents occur during the  takeoff. This is because unlike most other types of air- craft, a powered parachute needs to create the airfoil  before flight can be attempted. This critical process  happens during the takeoff roll. The importance of  thorough knowledge, faultless technique, and judg- ment cannot be overemphasized. Although the takeoff and climb is one continuous ma- neuver, it will be divided into four separate steps for  purposes of explanation: The inverted method of laying out a wing involves  spreading it out with the bottom surface of the wing  facing up like a blanket on the beach. [Figure 7-1] The  trailing edge of the wing is positioned closest to the  cart and the leading edge is pulled out as far behind  the cart as it will lay without pulling the cart back- wards. This method allows for a clear inspection of the wing  and the attachment points of the suspension lines. It  also allows the propeller blast on most carts to go over  the wing, keeping it from inflating too early. Normally, the process is considered complete when  the powered parachute has reached a safe maneu- vering altitude, or an enroute climb has been estab- lished. Terms and Definitions The Inverted Method Laying Out the Wing Figure 7-1. The inverted method of laying out the wing.  •  Equipment staging  — the portion of the  takeoff procedure during which the powered  parachute is positioned and the chute is set up  for takeoff.  •  Takeoff roll (ground roll)  — the portion of the  takeoff procedure during which the powered  parachute is accelerated from a standstill to an  airspeed that provides sufficient lift for it to  become airborne.  •  Rotation and liftoff  — enough lift is on the  wing to rotate the nose wheel and lift the  powered parachute off the ground. •  Initial climb  — begins when the powered  parachute leaves the ground and a rate of climb  is established.  The main advantage to the inverted method is that  when the cart rolls forward on the takeoff roll, it  pulls the leading edge (A-lines) before it pulls the  other suspension lines. This allows for a quick in- flation of the wing. However, the inverted method  is prone to lifting at the edges of the wing when  there is wind. The wind can get under the corners  of the wing and blow it up and back before you are  ready to take off which can delay the proper infla - tion of the wing during the takeoff roll. Keep in mind  that if the wind is blowing hard enough to lift the  wing from its layout position, the flight conditions should be reviewed before continuing with the flight. Refer to Chapter 5 to understand wing  inspection , a  separate procedure from wing  layout . There are sev- eral ways to successfully lay out a powered parachute  wing. What an instructor teaches is usually determined  by the terrain, wind conditions, wing shape, and per- sonal preference. There are two major layout meth- ods: the inverted method and the stacked method.