Flight Instruments

Question 1

Static Vents (Position, purpose)

Answer 1

There is 1 static vent plate on each side of the fuselage, forward of the pitot tube. Each plate has 3 ports. Each port is cross vented to the port on the other side of the aircraft. One pair of ports supplies ADC 1 and pilot’s ASI. Another pair of ports supplies ADC 2 and co-pilot’s ASI. Third pair of ports supplies cabin altitude controller, standby altimeter and acts as an alternate source for the other two.