SH.VI.A.S2

From the FAA library

• Helicopter Flying Handbookp. 10-5
  Chapter 10: Advanced Flight Maneuvers › Rapid Deceleration or Quick Stop › Technique

  cyclic requires an equally rapid application of down collective. As collective is lowered, apply proper antitorque pedal pressure to maintain heading, and adjust the throttle to maintain rpm. The G loading on the rotor system depends on the pitch ... attitude. If the attitude is too high, the rotor system may stall and cause the helicopter to impact the surface. After attaining the desired speed (position 4), initiate the recovery by lowering the nose and allowing the helicopter to descend…

• Helicopter Flying Handbookp. 11-16
  Chapter 11: Helicopter Emergencies and Hazards › Low Rotor RPM and Rotor Stall

  Other causes of a power-on low rotor rpm condition include the pilot rolling the throttle the wrong way in helicopters not equipped with a governor or a governor failure in helicopters so equipped. As the rpm decreases, the amount ... more difficult than it would otherwise be. With less power from the engine and less lift from the decaying rotor rpm, the helicopter will start to settle. If the pilot raises the collective to stop the settling, the situation will…

• Helicopter Flying Handbookp. 11-2
  Chapter 11: Helicopter Emergencies and Hazards › Autorotation

  Following this general procedure of fitting airspeed and rotor rpm to existing conditions, a pilot can achieve approximately the same glide angle in any set of circumstances, and thereby estimate the touchdown point accurately. Figure 11-1. During an autorotation ... upward flow of relative wind permits the main rotor blades to rotate at their normal speed. In effect, the blades are “gliding” in their rotational plane. It is important that pilots experience autorotations from various airspeeds. This provides better understanding…

• Helicopter Flying Handbookp. 4-3
  Chapter 4: Helicopter Components, Sections, and Systems › Main Rotor System › Semirigid Rotor System

  same plane as the hub. Whatever stresses are remaining bend the blades for compliance. Helicopters with semirigid rotors are vulnerable to a condition known as mast bumping which can cause the rotor flap stops to shear the mast. The mechanical ... design of the semirigid rotor system dictates downward flapping of the blades must have some physical limit. Mast bumping is the result of excessive rotor flapping. Each rotor system design has a maximum flapping angle. If flapping exceeds the design…

• Helicopter Flying Handbookp. 11-18
  Chapter 11: Helicopter Emergencies and Hazards › System Malfunctions › Loss of Tail Rotor Effectiveness (LTE)

  catastrophic. LTE is an aerodynamic condition and is the result of a control margin deficiency in the tail rotor. It can affect all single-rotor helicopters that utilize a tail rotor. The design of main and tail rotor blades ... will not nullify the phenomenon entirely. Translational lift is obtained by any amount of clean air through the main rotor disk. Chapter 2, Aerodynamics of Flight, discusses translational lift with respect to the main rotor blade, explaining that the more…

• Aeronautical Information Manualp. 4-4-10
  Chapter 4. Air Traffic Control › Section 4. ATC Clearances and Aircraft Separation › 4-4-12. Speed Adjustments

  Instruct the pilot to “resume published speed.” Resume published speed is issued to terminate a speed adjustment where speed restrictions are published on a charted procedure. NOTE-When instructed to “comply with speed restrictions” or to “resume published speed ... anticipates pilots will begin adjusting speed the minimum distance necessary prior to a published speed restriction so as to cross the waypoint/fix at the published speed. Once at the published speed, ATC expects pilots will maintain the published speed until…