Flight Instructor for Rotorcraft Category Helicopter Rating › XI. Emergency Operations › Task K. Low Gravity (G) Recognition and Recovery

HI.XI.K.K2

Knowledge

Effects of low G conditions on various rotor systems.

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Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Helicopter Flying Handbook p. 11-15
Chapter 11: Helicopter Emergencies and Hazards › Low-G Conditions and Mast Bumping
Recover from a low-G situation by first gently applying aft cyclic to restore normal G before attempting to correct any roll. If turbulence is expected or encountered, reduce power and use a slower than normal cruise speed. Turbulence (where ... high rotor flapping angles are already present), and higher airspeeds (where the controls are more sensitive) both increase susceptibility to low-G conditions. • Use a flight simulator to learn to recognize and experience low G conditions that result in mast…
Helicopter Flying Handbook p. 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…
Pilot's Handbook of Aeronautical Knowledge p. 12-7
Chapter 12: Weather Theory › Wind and Currents › Wind Patterns
Wind Patterns In the Northern Hemisphere, the flow of air from areas of high to low pressure is deflected to the right and produces a clockwise circulation around an area of high pressure. This is known as anticyclonic circulation ... opposite is true of low-pressure areas; the air flows toward a low and is deflected to create a counterclockwise or cyclonic circulation. [Figure 12-10] High-pressure systems are generally areas of dry, descending air. Good weather is typically…
FAA Aeronautical Chart Users' Guide p. 82
IFR ENROUTE LOW / HIGH ALTITUDE SYMBOLS (U.S., PACIFIC AND ALASKA CHARTS) › AIRSPACE INFORMATION
NAVAID or Fix Note: Not shown on joint Victor/RNAV or Jet/RNAV Routes. VHF/UHF LF/MF MINIMUM ENROUTE ALTITUDE (MEA) RNAV LOW CHARTS LOW CHARTS All Altitudes Are MSL Unless Otherwise Noted. LOW CHARTS Directional MEAs HIGH CHARTS HIGH CHARTS HIGH CHARTS ... shown on IFR High Altitude Charts when MEA is other than 18,000’. aircraft MEA for DME/DME/IRU RNAV aircraft LOW CHARTS MINIMUM ENROUTE ALTITUDE (MEA) GAP N/A MEA is established when there is a gap in navigation signal coverage. HIGH…