Airframe Systems and Components (Instruments) Flashcards
What three flight instruments are normally operated from the Pitot static system?
Altimeter, vertical speed indicator, (connected to static pressure only)
airspeed (connected to both pitot and static)
what instrument indications will result if the static pressure line becomes disconnected inside the cabin of a pressurized aircraft?
The Altimeter and Airspeed indications will both be lower than normal, and the vertical speed indicator will indicate a momentary decent then return to zero.
Who is authorized to perform test to calibrate and altimeter?
Manufacturer or Certified repair station
what is required of the replacement of components connected to the Pitot static system?
Leak check
in what type vacuum pumps, what are veins made from?
steel
how are veins of a wet type pump lubricated?
Engine Oil
what are the sources of power to gyroscopic instrument operation?
Vacuum, electricity, or air pressure
what causes an electric driven Gyro rotor to tilt when the aircraft is turned?
gyroscopic precession
what is used as a guide for a range marking of aircraft instruments?
Aircraft specifications, type certificate that is sheets and specific aircraft maintenance manual or flight manual
where are instrument range markings placed?
` the outer edge of the cover glass or over calibrations on the dial face of the instrument.
What other type mark is required when the range markings are applied to the glass instrument cover?
Index Mark (Slippage mark)
what is a Synchro type remote indicating system?
System used to show movement and position of landing gear, wingflaps, oil cooler doors, or other movable parts of the aircraft.
what type of file quantity system is an electric field measuring device that accurately determines the density of weight of the fuel in the tanks?
Capacitor type fuel quantity system
what is meant by swinging a compass?
Adjustment of north south, and east west magnets in order to reduce deviation.
When inspecting a magnetic compass the bowl should be filled with liquid and should not contain any bubbles or discoloration. What is the purpose of the liquid in the bowl?
It dampens the oscillations of the float.
Yes what is the fluid used in a magnetic compass?
clear fluid such as kerosene
where is the compass correction card placed?
Near the compass and in plain sight of the pilot.
Which instrument is used to indicate speed of the crankshaft of a reciprocating engine and the speed of each main rotor assembly in a turbine engine?
Tachometer
what type of indicating system is used to indicate turbine engine exhaust gas temperature?
Thermocouple system
What does the manifold pressure gauge indicate when the engine is not operating?
Atmospheric pressure
What is used to check a manifold pressure gauge for correct indication when the engine is not operating?
Barometer or altimeter after its been set to zero
what is the meaning of the yellow range on the airspeed indicator
Caution range
What does a Mach meter indicate?
ratio of aircraft speed to the speed of sound at a particular altitude and temperature during any time in flight.
Why do you not try to remove a blockage in a Pitot system
to prevent further damage to the pitot system
