PH.V.I.R3a

From the FAA library

• Helicopter Flying Handbookp. 7-3
  Chapter 7: Helicopter Performance › Performance Charts › Height/Velocity Diagram

  power loss resulting in an uncushioned landing would probably be survivable. As the airspeed increases without an increase in height, there comes a point at which the pilot’s reaction time would be insufficient to react with a flare ... response time of the helicopter flight controls at slow airspeeds and low altitudes. Even small increases in height give the pilot much greater time to react; therefore, the bottom right part of the H/V diagram is usually a shallow gradient…

• Pilot's Handbook of Aeronautical Knowledgep. 11-13
  Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Runway Surface and Gradient

  Takeoff distance chart. The gradient or slope of the runway is the amount of change in runway height over the length of the runway. The gradient is expressed as a percentage, such as a 3 percent gradient. This means that ... every 100 feet of runway length, the runway height changes by 3 feet. A positive gradient indicates the runway height increases, and a negative gradient indicates the runway decreases in height. An upsloping runway impedes acceleration and results…

• Helicopter Flying Handbookp. 10-9
  Chapter 10: Advanced Flight Maneuvers › Confined Area Operations

  important is maintaining a clearance between the rotors and obstacles forming the confined area. The tail rotor deserves special consideration because, in some helicopters, it is not always visible from the cabin. This not only applies while making the approach ... also while hovering. Another consideration is that wires are especially difficult to see; however, their supporting devices, such as poles or towers, serve as an indication of their presence and approximate height. If any wind is present, expect some turbulence…

• Helicopter Flying Handbookp. 9-13
  Chapter 9: Basic Flight Maneuvers › Crosswind Considerations During Takeoffs

  Using excessive power combined with a level attitude, which causes a vertical climb, unless needed for obstructions and landing considerations. 3. Application of the collective that is too abrupt when departing the surface, causing rpm and heading control errors. Crosswind ... Considerations During Takeoffs If the takeoff is made during crosswind conditions, the helicopter is flown in a slip during the early stages of the maneuver. [Figure 9-13] The cyclic is held into the wind a sufficient amount to maintain…

• Pilot's Handbook of Aeronautical Knowledgep. 5-11
  Chapter 5: Aerodynamics of Flight › Ground Effect

  Figure 5-16. Ground effect changes airflow. Ground effect also alters the thrust required versus velocity. Since induced drag predominates at low speeds, the reduction of induced drag due to ground effect will cause a significant reduction of thrust required ... ground. One of the direct results of ground effect is the variation of induced drag with wing height above the ground at a constant CL. When the wing is at a height equal to its span, the reduction in induced…

• Pilot's Handbook of Aeronautical Knowledgep. G-15
  Glossary › Domestic Reduced Vertical Separation Minimum

  airports equipped with the following types of instrument landing systems: ILS Category I: Provides for approach to a height above touchdown of not less than 200 feet, and with runway visual range of not less than 1,800 feet ... Category II: Provides for approach to a height above touchdown of not less than 100 feet and with runway visual range of not less than 1,200 feet. ILS Category IIIA: Provides for approach without a decision height minimum…