text: Chapter 3
  THREE LEGS OF TRAFFIC PATTERN
  3-35. The pathfinder can only extend the traffic pattern on three legs: upwind, crosswind, and
  downwind (Figure 3-3). He can only extend one leg at a time. He cannot extend the base leg or the final
  approach, because they run back into the traffic pattern itself. When giving instructions to extend the traffic
  pattern, the pathfinder includes the length of the extension. The extension normally measures twice the
  original length of that leg (1 statute mile). The pathfinder takes care to ensure that he does not extend the
  leg so far that he loses visual contact with the aircraft.
  Figure 3-3. Traffic pattern extension.
  FINAL LANDING INSTRUCTIONS
  3-36. Final landing instructions consist of a current wind reading (direction and velocity) and clearance
  to land. The pathfinder includes any change to the situation in the final landing instructions, which he
  issues as soon as the pilot reports from the designated point. As a rule, once the pathfinder clears an aircraft
  to land, he can only rescind that clearance in extreme situations.
  3-37. The best reporting points vary with the situation.
  3-38. Aircraft flying in formation, except those flying in trail, and aircraft with a slingload, usually form
  their own approach.
  3-39. If two or more missions arrive at the same time, the controller gives first landing priority to
  in-flight emergencies, followed by MEDEVAC aircraft. His next priority is coded aircraft, multiple aircraft
  in formation, and aircraft with slingloads. His last priority is single aircraft.
  TAXIING AIRCRAFT
  3-40. When issuing taxiing instructions, the pathfinder includes a route for the aircraft to follow in the
  movement area. He also includes instructions for the pilot to hold the aircraft at a specific point, if needed.
  The pilot moves the aircraft in the loading, maintenance, dispersal, or parking areas without the
  pathfinder's help but sometimes aided by signalmen. The controller holds a taxiing aircraft short of an
  active runway by at least two airplane lengths. This ensures that landing aircraft have sufficient clearance.
  The controller issues concise, easy-to-understand information.
  Example: SIERRA TWO SIX, TURN RIGHT AT SIGNALMAN.
  TANGO THREE SIX, TURN LEFT AT END OF RUNWAY, OVER.