AM.II.H.K4

From the FAA library

• Instrument Flying Handbookp. 5-8
  Chapter 5: Flight Instruments › Dynamic Pressure Type Instruments › Airspeed Indicator (ASI)

  speed indicators (IVSI), have two accelerometer-actuated air pumps that sense an upward or downward pitch of the aircraft and instantaneously create a pressure differential. By the time the pressure caused by the pitch acceleration dissipates, the altitude pressure change ... Indicator (ASI) An ASI is a differential pressure gauge that measures the dynamic pressure of the air through which the aircraft is flying. Dynamic pressure is the difference in the ambient static air pressure and the total, or ram, pressure…

• Aviation Maintenance Technician Handbook - Airframep. 10-8
  Chapter 10: Aircraft Systems › Pressure Instruments › Manifold Pressure

  gauge indicates the absolute pressure in the intake manifold. An analog manifold pressure gauge, along with its internal workings, is shown in Figure 10-15. The digital presentation of manifold pressure is at the top of the engine instruments displayed ... column on the left side of this digital flight deck display panel. Figure 10-15. An analog manifold pressure indicator instrument dial calibrated in inches of mercury (left). The internal workings of an analog manifold pressure gauge are shown…

• Aviation Maintenance Technician Handbook - Airframep. 10-22
  Chapter 10: Aircraft Systems › Pitot-Static Pressure-Sensing Flight Instruments › Airspeed Indicators

  instantaneously vertical speed indication. Figure 10-39. The VSI is a differential pressure gauge that compares free-flowing static air pressure in the diaphragm with restricted static air pressure around the diaphragm in the instrument case. Airspeed Indicators The airspeed ... pointer to move over the instrument face, which is calibrated in knots or miles per hour (mph). [Figure 10-42] The relationship between the ram air pressure and static air pressure produces the indication known as indicated airspeed…