AIRCRAFT INSTRUMENT SYSTEM Flashcards
The operating mechanism of most hydraulic pressure gauges is _______.
Bourdon tube.
What is the fixed line mark attached to the compass bowl of a magnetic compass
called?
Lubber line.
When swinging a magnetic compass, the compensators are adjusted to correct
for______.
magnetic influence deviation
The maximum deviation (during level flight) permitted in a compensated
magnetic direction indicator installed on an aircraft certificated under Federal
Aviation Regulation Part 23 is ____________.
10.
Magnetic compass bowls are filled with a liquid to___________-.
dampen the oscillation of the float.
The maximum altitude loss permitted during an unpressurized aircraft
instrument static pressure system integrity check is______
100 feet in 1 minute.
When an aircraft altimeter is set at 29.92 inches Hg on the ground, the altimeter will
read_______________.
pressure altitude.
When an aircraft altimeter is set at 29.92 inches Hg on the ground, the altimeter will
read_________.
pressure altitude.
A turn coordinator instrument indicates________.
both roll and yaw.
Thermocouple leads_________.
are designed for a specific installation and may not be altered.
A synchro transmitter is connected to a synchro receiver__________.
electrically with wires.
Fuel flow transmitters are designed to transmit data ___________.
electrically.
Data transmitted between components in an EFIS are converted into_____.
digital signals.
The function of a CRT in an EFIS is to_________ .
display alphanumeric data and representations of aircraft instruments.
The function of a symbol generator (SG) in an EFIS is to _________.
receive and process input signals from aircraft and engine sensors and send the
data to the appropriate display.
A radar altimeter determines altitude by___________.
transmitting a signal and receiving back a reflected signal.
How would an airspeed indicator be marked to show the best rate of climb
speed (one engine inoperative)?
A blue radial line.
What marking color is used to indicate if a cover glass has slipped?
white.
Aircraft instruments should be marked and graduated in accordance
with____.
the specific aircraft maintenance or flight manual
The method of mounting aircraft instruments in their respective panels
depends on the_____.
design of the instrument case.
Cases for electrically operated instruments are made of_________ .
Iron or steel cases.
When installing an instrument in an aircraft, who is responsible for
making sure it is properly marked?
The instrument installer.
The red radial lines on the face of an engine oil pressure gauge
indicates_______.
minimum and/ or maximum safe operating limits.
A certificated mechanic may perform__________.
100-hour inspections of instruments.
An aircraft instrument panel is electrically bonded to the aircraft structure
to_________.
provide current return paths.
When performing the static system leakage check required by Section 91.411, the
technician utilizes_____________.
negative pressure.
If a static pressure system check reveals excessive leakage, the leak(s) may be
located by____________.
isolating portions of the line and testing each portion systematically, starting at
the instrument connections.
The lubber line on a directional gyro is used to__________.
represent the nose of the aircraft.
How is a flangeless instrument case mounted in an instrument panel?
By an expanding type clamp secured to the back oftie panel and
tightened by a screw from the front of the instrument panel.
How would an airspeed indicator be marked to show the best rate of climb
speed (one engine inoperative)?
A blue radial line.
