Aircraft Instrumentation Quiz

The pressure measured at the forward facing orifice of a pitot tube is the:

• static pressure

• total pressure

• total pressure plus static pressure

• dynamic pressure

A pitot blockage of both the ram air input and the drain hole with the static port open causes the airspeed indicator to:

• react like an altimeter

• read a little high

• read a little low

• freeze at zero

A pitot tube covered by ice which blocks the ram air inlet will affect the following instrument(s):

• altimeter only

• airspeed indicator only

• vertical speed indicator only

• airspeed indicator, altimeter and vertical speed indicator

In a non-pressurized aircraft, if one or several static pressure ports are damaged, there is an ultimate emergency means for restoring a practically correct static pressure intake:

• breaking the rate-of-climb indicator glass window

• slightly opening a window to restore the ambient pressure in the cabin

• descending as much as possible in order to fly at a pressure as close to 1013.25 hPa as possible

• calculating the ambient static pressure, allowing for the altitude and QNH and adjusting the instruments

The atmospheric pressure at FL 70 in a 'standard + 10' atmosphere is:

• 781.85 hPa

• 942.13 hPa

• 1013.25 hPa

• 644.41 hPa

In a standard atmosphere and at sea level, the calibrated airspeed (CAS) is:

• higher than the true airspeed (TAS)

• independent of the true airspeed (TAS)

• equal to the true airspeed (TAS)

• lower than the true airspeed (TAS)

Which instrument does not connect to the static system?

• Altimeter

• Vacuum gauge

• Airspeed indicator

• Vertical speed indicator

What corrections must be applied to indicated airspeed to produce true airspeed?

• Correction for heading and altitude

• Correction for wind and temperature

• Correction for altitude and wind

• Correction for altitude and temperature

The pitot tube supplies:

• Alternate static pressure

• Impact pressure

• Dynamic pressure alone

• Static pressure alone

If the alternate static source is used, the resulting reading will be:

• Too low reading of altitude

• Too high reading of altitude

• Too low reading of airspeed

• No reading of airspeed