Aircraft Instrument Systems Flashcards
A static check may be performed to check manifold pressure indicator gauge with what information?
Current atmospheric pressure
What flight instruments are usually connected to a pitot static system?
Air speed, vertical speed indicator, altimeter, and Mach meter
Why should you avoid cleaning obstructions from the sensing holes in a pitot static system?
The holes are aerodynamically critical
What causes an electric driven Gyro rotor to tilt when the aircraft just turned?
Gyroscopic precession
What indication errors may be found in altimeters?
Scale errors, hysterias (lags), friction and installation
What aircraft instrument can be used to check manifold pressure gauge for proper indication?
The sensitive altimeter
What is a Synchro type remote indicating system?
A system that transmit information from one point to another point, for example, the flap position
What does a tachometer indicate?
Crankshaft RPM or main turbine rotor speed in percentage of RPM
Where does an electrical resistance temperature indicator receive a signal?
From a temperature bulb or sensitive element
What type of indicating system is a turbine engine exhaust gas temperature system?
A thermocouple type system
What methods are used to drive turn-and-bank/slip (Gyroscopic turn indicator) indicators?
Vacuum, air pressure or electricity
Who is authorized to apply the range markings to an instrument dial face?
The manufacturer or certified instrument repair station
What does a yellow arc on an instrument dial indicate?
Caution
Why are slippage marks used on instruments glass covers?
To indicate glass rotation in the Bezel
What references should be consulted to determine the proper range markings for aircraft instruments?
The aircraft maintenance manual, aircraft flight manual, TCDS or aircraft specifications
When range markings are placed on instrument glass, what precaution must be taken?
The glass must be marked for slippage indication
What is required after replacement of components connected to a Pitot-static system
Leak test
What is the meaning of swinging a compass?
Correction for deviations by adjusting the compensating magnets
Name at least two items that should we look for during inspection of a magnetic compass
- Security of attachment.
- Correct readings at various headings.
- The bowl should be full without bubbles or discoloration.
- The scale should be readable
- Moving parts should work easily.
In what way do magnetic fields generated by electrical equipment and steel parts in the airplanes affect a magnetic compass?
Magnetic field deflect a compass from correct alignment with the earths magnetic field
What quantity is accurately measured by capacitance type fuel quantity indicating system?
The mass of the fuel
