AA.I.H.K1c
KnowledgeThe characteristics of a water surface as affected by features, such as:
Surface wind
From the FAA library
- LANDING › ROUGH WATER LANDING
typical or ideal rough water landing procedure is impractical because of the many variables that affect the water’s surface. Wind direction and speed must be weighed along with the surface conditions of the water. In most instances, though, make…
- Chapter 7. Safety of Flight › Section 1. Meteorology › 7-1-24. Microbursts
should be prepared to apply wind shear/microburst escape procedures should they decide to continue the approach. Additionally, the surface winds at the airport for landing runway 27 are reported as 250 degrees at 20 knots. NOTE-Threshold wind ... wind shear condition that will decrease their airspeed by 20 knots and possibly encounter turbulence. Additionally, the airport surface winds for landing runway 27 are reported as 200 degrees at 15 knots. NOTE-Threshold wind is at pilot’s request…
- Chapter 12: Weather Theory › Wind and Currents › Wind and Pressure Representation on Surface Weather Maps
Representation on Surface Weather Maps Surface weather maps provide information about fronts, areas of high and low pressure, and surface winds and pressures for each station. This type of weather map allows pilots to see the locations of fronts ... pressure systems, but more importantly, it depicts the wind and pressure at the surface for each location. For more information on surface analysis and weather depiction charts, see Chapter 13, Aviation Weather Services. Wind conditions are reported by an arrow…
- DETERMINING SEA CONDITIONS
wave crests at a fixed point is the period of the wave. Waves are usually caused by wind moving across the surface of the water. As the air pushes the water, ripples form. These ripples become waves in strong ... when the wind reaches about two knots. At this windspeed, patches of ripples begin to form. If the wind stops, surface tension and gravity quickly damp the waves, and the surface returns to its flat, glassy condition. If the wind…
- CHARACTERISTICS OF WATER
they affect the seaplane. As a fluid, water seeks its own level, and forms a flat, glassy surface if undisturbed. Winds, currents, or objects traveling along its surface create waves and movements that change the surface characteristics. Just as airplanes ... transmitted directly through the floats and struts to the basic structure of the airplane. Under calm wind conditions, the smooth water surface presents a uniform appearance from above, somewhat like a mirror. This situation eliminates visual references for the pilot…
- SEAPLANE, SKIPLANE, and FLOAT/SKI EQUIPPED HELICOPTER OPERATIONS HANDBOOK
hydrodynamic lift. BEAUFORT WIND SCALE—A standardized scale ranging from 0-12 correlating the velocity of the wind with predictable surface features of the water. DOWNSWELL—Motion in the same direction the swell is moving. CHOP— A roughened condition ... surface caused by local winds. It is characterized by its irregularity, short distance between crests, and whitecaps. BILGE PUMP—A pump used to extract water that has leaked into the bilge of a float or flying boat. FETCH—An area…