Air frame contamination

#1. After an aircraft has been exposed to severe weather:

• Asnow should be removed but smooth ice may be left
• Ball snow and ice should be removed
• Cloose snow may be left but ice must be removed
• Dproviding the contamination is not too thick, it may be left in place

#4. Frost covering the upper surface of an aircraft wing will usually cause:

• Athe aircraft to stall at an angle of attack that is lower than normal
• Bno problems to pilots
• Cdrag factors so large that sufficient speed cannot be obtained for take-off
• Dthe aircraft to stall at an angle of attack that is higher than normal

#6. When considering in-flight airframe contamination with frost or ice, which of the following statements is correct?

• ABuild-up can be identified by the ice detection equipment fitted to the aircraft
• BThe pilot can visually identify build-up on the wings, tailplane or flight controls by looking through the flight deck windows; at night by using the ice detection lights.
• CVisual evidence of the accumulation of airframe icing may not exist
• DDue to the high speed of modern aircraft, significant airframe contamination with frost, ice or snow will not occur