text: Chapter 5
  CARGO NET
  5-54. A 5,000-pound-capacity (15 feet square) or 10,000-pound-capacity (18 feet square) nylon cargo
  net requires one A7A cargo strap or length of rope. With this the pathfinder can secure the net together on
  top of the load to prevent smaller items from falling out of the net.
  PERFORATED STEEL PLANKING
  5-55. Perforated steel planking (PSP) requires—
  y Two 16-foot, two or three-loop ADSs.
  y One 3-foot ADS with one type IV link assembly (for donut).
  FUEL DRUMS
  5-56. One or two rubber or fabric fuel drums (blivets), each of which contains 500 gallons of fuel and a
  10,000-pound-capacity sling set.
  CONCERTINA WIRE
  5-57. The items required to move this load depend on the amount of concertina wire in the load.
  CARGO BAG
  5-58. The A-22 cargo bag has a maximum capacity of 2,200 pounds.
  SLINGLOAD THEORY
  5-59. The behavior of an external load in flight can greatly affect the performance of the aircraft
  carrying it. High drag coefficients reduce airspeed. This means that the task takes longer or does not get
  finished if the allotted time for the task expires. Therefore, whoever prepares the load must try to reduce
  the drag of the load on the aircraft. A high drag coefficient can also endanger the aircraft and crew.
  Because of this, the pilot must "punch" if he thinks that continuing to fly the load could endanger his crew
  or aircraft. To stabilize a load, the loaders should consider the following:
  ADDITION OF WEIGHT TO THE LOAD
  5-60. The heavier a load, the less air pressure will disturb it. Thus, carrying heavier loads assures greater
  stability. However, make sure the load does not exceed the rated capacity of the equipment or the ACL of
  the aircraft.
  STREAMLINING OF THE LOAD
  5-61. Long, symmetrical loads fly crosswise to the direction of flight. This causes a lot of drag on the
  aircraft. Loads tend to stabilize if the center of gravity (CG) is located in the first one-third of the load.
  Either adjust the load or, if needed, add weight to move the CG toward one end or the other. The heavier
  end of the load will "seek" the direction of flight and the load will stabilize. The lighter tail end of the load
  will act just like the fins on a dart.
  AIRSPEED OF THE AIRCRAFT
  5-62. The least desirable method is to have the aircraft fly slow to try to keep the load from
  destabilizing. This burns extra fuel and takes more time to do less work. Prepare the loads so that the
  aircraft can fly safely at speeds of 60 knots or more.