PH.IV.A.S4
SkillAscend to and maintain recommended hovering altitude, and descend from recommended hovering altitude in headwind, crosswind, and tailwind conditions, without drift.
From the FAA library
- Chapter 9: Basic Flight Maneuvers › Normal Takeoff from a Hover › Technique
Normal Takeoff from a Hover A normal takeoff from a hover is an orderly transition to forward flight and is executed to increase altitude safely and expeditiously. Before initiating a takeoff, the pilot should ensure that the proper checklist ... shaded areas of the height/velocity diagram. Technique Refer to Figure 9-12 (position 1). Bring the helicopter to a hover and perform a hover and systems check, which includes power, balance, and flight controls prior to continuing flight. The power…
- Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Landing Performance
deceleration during the landing is identical to the effect on acceleration during the takeoff. The effect of pressure altitude and ambient temperature is to define density altitude and its effect on landing performance. An increase in density altitude increases ... landing speed but does not alter the net retarding force. Thus, the aircraft at altitude lands at the same IAS as at sea level but, because of the reduced density, the TAS is greater. Since the aircraft lands at altitude…
- Chapter 9: Basic Flight Maneuvers › Vertical Takeoff to a Hover › Technique
Helicopters usually hover left side low due to the tail rotor thrust being counteracted by the main rotor tilt. A nose low or high condition is generally caused by loading. Once stabilized, check the engine instruments and note the power ... required to hover. Excessive movement of any flight control requires a change in the other flight controls. For example, if the helicopter drifts to one side while hovering, the pilot naturally moves the cyclic in the opposite direction. When this…
- Chapter 8: Flight Instruments › Altimeter Operation
altimeter indicates an altitude above the actual field elevation. If the barometric pressure setting is reset to the current altimeter setting of 29.68 "Hg, then the field elevation is again indicated on the altimeter. This pressure change ... easily noticed in flight since aircraft fly at specific altitudes. The aircraft steadily decreases true altitude while the altimeter is held constant through pilot action as discussed in the previous section. Knowing the aircraft’s altitude is vitally important…
- Chapter 11: Aircraft Performance › Takeoff and Landing Performance › Takeoff Performance
aircraft requires the same dynamic pressure to become airborne at the takeoff lift coefficient. Thus, the aircraft at altitude takes off at the same indicated airspeed (IAS) as at sea level, but because of the reduced air density ... greater. The effect of density altitude on powerplant thrust depends much on the type of powerplant. An increase in altitude above standard sea level brings an immediate decrease in power output for the unsupercharged reciprocating engine. However, an increase…
- Chapter 9: Approaches and Landings › Crosswind Approach and Landing › Maximum Safe Crosswind Velocities
Maximum Safe Crosswind Velocities Takeoffs and landings in certain crosswind conditions are inadvisable or even dangerous. [Figure 9-18] If the crosswind is great enough to warrant an extreme drift correction, a hazardous landing condition may result. Therefore, the takeoff ... landing capabilities with respect to the reported surface wind conditions and the available landing directions should be considered. Figure 9-18. Crosswind chart. Before an airplane is type certificated by the Federal Aviation Administration (FAA), it is flight tested…