Flight Instruments Flashcards
What happens when the Pitot tube is Blocked and the drain hole is open
ASI drops to 0
What happens when the Pitot tube is blocked and the drain hole is blocked
The ASI becomes an altimeter
What happens when the Pitot tube is clear but the Static system is blocked?
The ASI indicates higher airspeed at higher altitude than when blockage formed and Lower airspeed lower than that altitude
How can you tell if your static system has blockage
Altimeter freezes at the altitude where the blockage occurred and the VSI won’t indicate movement
How are the instruments affected on the alternate static air source
Altimeter indicates higher than actual
ASI indicates greater than actual airspeed
VSI shows momentary climb then stabilizes
How far off can an altimeter be on the ground check?
75 feet different from Airfield Elevation
Indicated Altitude in warmer than standard air
Pressure Levels expand and true altitude is Higher than in standard conditions
Indicated Altitude in colder than standard air
Pressure Levels contract and true altitude is Lower than in standard conditions
What temperature must a pilot be most worried about for obstacle clearance
Cold temperature, The pressure levels contract and true altitude is lower which could affect obstacle clearance minimums
A pilot flies from higher pressure to lower pressure without adjusting the altimeter is he higher or lower than indicated
Lower
What flight level does RVSM start
FL 290
What is RVSM
When rated you only need 1000 ft vertical separation opening up more flight levels
Vertical Separation Minimums with out RVSM
2000 feet.
290 east
310 west
330 East…
410 east
IAS
Indicated Airspeed uncorrected
CAS
Calibrated air speed: speed the aircraft is moving through the air
