ATSC 231 BLOCK 4 EXAM

frequency of icing accidents relative to other weather hazards - Answer-GA has the most icing accidents and the largest percentage of fatal icing accidents 121 the most icing related fatalities Most icing accidents occur in December and January Icing is cited less than most other weather phenomena in accident reports identify trends in statistical data relating to icing accidents including the frequency of fatal icing accidents, ratings held, flight experience and phase of flight - Answer-Icing accidents occur most in cruise, private pilots followed closely by commercial pilots suffer the most icing accidents Most icing accidents occur at around 500 hours of flight experience and pilots with low hours on a new aircraft are more at risk of accidents define induction icing - Answer-All icing that affects powerplant operation identify the conditions that produce carburetor icing - Answer-- Adiabatic Pressure Drop in Venturi - Vaporization of Fuel - Visible Moisture Need Not Be Present - Most Probable • 80oF to 20oF • High Humidity • Gliding (or Idle) Flight symptoms of carburetor icing - Answer-- Fixed Pitch Prop • Gradual Loss of Power - Engine Roughness - Constant Speed Prop • Gradual Loss of Manifold Pressure - Engine Roughness antidote for carburetor icing - Answer-Carburetor Heat - Full Application -