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Auto pilot comms elt

QuestionAnswer
What dictates the servicing and inspection requirements of ELT's. FAR 91.207
What frequency does an ELT for light aircraft transmit on? 121.5 mhz
Where on the aircraft is an ELT located? As far aft as possible but forward of the epinnage.
How is an ELT activated? With G force parallel to the longitudinal axes of the aircraft.
121.5 mhz frequency is also know as the? Guard.
Modern ELTS in transport category aircraft transmit on what frequency? 406 mhz
How is the ELT tested? Remove antenna install dummy load
How may the activation of an ELT signal be accomplished? From the hour to no longer than 5 minutes past the hour and no more than 3 sweeps.
What does ADS-B stand for? Automatic dependent surveillance broadcast.
Is ADS-B required by the FAA? ADS-B out is required ADS-B in is not.
What does ADS-B out transmit? Position, Altitude and Airspeed.
What does ADS-B in transmit? Tracking and weather information.
What systems can supplement and enhance ADS-B? WAAS.
What does WAAS stand for? Wide area augmentation system.
Describe qudrantal error? Errors in the signals received by the ADF antenna caused by the aircraft structure.
How can qudrantal error be corrected? By calibrating the loop antenna.
What is the primary purpose of the autopilot system? Reduce the work strain and fatigue of controlling the aircraft during long flights.
What is a simple autopilot system called used in small aircraft? Single axis, wing leveler system.
What axis does an autopilot system control the aircraft around. Vertical, longitudinal, lateral.
What is AFCS and where is it used? Automatic flight control system used in large transport category aircraft.
What system co ordinates almost all aspects of flight? FMS flight management system.
What are the two basic ways autopilot systems work? Position based and rate based.
How does a position based system work? System controls aircrafts flight controls to correct any deviation from the desired memorized flight attitude.
How does a rate based system work? Rate based systems use information about the rate of movement and counter the rate of change.
What are the basic components of an autopilot system? Sensing unit (gyro), flight controller, computer, amplifier, servos.
What are the sensing units of an autopilot system? Directional gyro, Attitude gyro, turn and slip gyro, Altitude control.
What are the output elements of an autopilot system? Servos.
How are servos actuated? Cables, electricity, electro-pneumatic, electrohydraulic.
What controls the movement of the servos? Computer and amplifier sends signals.
What are the command elements that allow the pilot to input desired flight characteristics into the autopilot system? Flight controller.
What is a feed back signal used for in an autopilot system? Follow up or feed back signals are sent to the computer from the servos to oppose the input signal and stop the correction of the controls slightly before desired position of control surface so it comes to rest at the required position.
What prevents the autopilot from over correcting itself? Follow up signal.
Where does the rudder system receive autopilot signals from? Course signal from compass system and the rate signal from turn and bank gyro.
Where does the aileron receive autopilot signals from? Horizon indicator gyro.
Apart from pitch control what other function does the elevator serve in an autopilot system? Altitude hold.
What signals the elevator for the purpose of altitude control? Altitude pressure diaphragm.
What prevents an aircraft from oscillating around its vertical axis? Yaw damper.
Where does the yaw damper receive signals from? Turn coordinator rate gyro.
Wha is the purpose of an EICAS system? To monitor and record aircraft and engine systems and provide parameters for maintenance personnel, and caution, warning lights and aural tones for flight crew.
A nav com radio incorporates what two systems? VOR navigation and VHF communications.
What VHF radio waves does a VOR system utilize? 108-117.95 mhz.
What is the main component of the FMS flight management system? Flight management computer.
Name some of the other systmes the FMS communicates with? EICAS, ECAM, ADC Thrust management, Auto throttle, AFCS.
How are warnings and cautions communicated to the flight crew? With warning lights and annunciator systems.
What is the indication of a yellow caution to the flight crew? Yellow is used to caution of a serious condition that requires further monitoring.
What are the basic components of a radio communication system? Microphone, speaker, antennas, transmitter, receiver, frequency selector.
What is the function of a transceiver? A radio that transmits and receives in the same unit.
How are antennas made to be compact in modern aircraft? By using loop antennas or placing a capacitor in series with transmitter or receiver.
What frequency do aircraft VHF systems communicate on? 118-136.975 mhz.
What are the 3 basic types of antennas? Dipole, Marconi, Loop.
What is a common antenna used for VHF VOR navigation? V shaped dipole VOR antenna.
What antennas are often used on ADF navigation systems. Loop antennas?
How is a coax cable properly mounted? As directly as possible, clamped every 24 inches, As far away as possible from other wires, lines and hoses.
What are the basic components of a VOR NAV system? Antennas, receiver, visual indicator, frequency selector.
What does VOR indicate? Heading.
What does DME indicate? how far away you are.
In modern ADF systems what is used to remove the ambiguity concerning aircraft heading? Loop and sense antennas.
What is the main purpose of an ILS system? To guide the aircraft down a slope to the runway when visibility is poor.
Where is a localizer antenna located and what does it indicate to the flight crew? As close to the center line of the aircraft as possible it centers the aircraft with the runway.
Where is the glideslope antenna located? Lower fuselage in a location so aircraft turning does not block the signal. Indicates correct angle of decent to the runway.
Why does an ILS have two different antennas? Because the localizer and glideslope operate on two different frequencies.
When a marker beacon receives a signal in an ILS system how is this indicated in the flight deck? Blue light on the instrument panel.
The DME system consists of? DME transceiver, display, antenna.
Wavelength is the ____________ between waves? Distance.
What does hertz mean? Cycles per second.
What is frequency modulation? Anything that changes from a set frequency.
What is the most common type of frequency used in aircraft communications? VHF
How do ground waves work? The follow the curvature of the earth.
How do space waves work? The travel through the atmosphere into space.
What type of modulation is used in communications? Amplitude or Frequency AF
What is the most basic navigation system used? ADF
What does ADF stand for? Automatic direction finder?
What does ADF indicate? Heading to the ground station.
How does an ADF system work? By using a loop and sense antenna?
What two signals are utilized in VOR Reference signal and directional signal.
What are the three basic components of an ILS system? Localizer, glideslope, 3 Marker beacons (Outer, Middle, Inner)
What does DME do? tells you how far from a ground station you are.
What tunes a radio signal on a small aircraft? NAV COM radio.
What's the function of the audible panel? Allows you to choose what radio you want to talk and listen on.
How does RNAV operate? Allows you to set waypoints for your flight path.
What does GPS stand for? Global positioning system?
How can GPS be made more accurate? Incorporating the WAAS system.
Spell Pierpont phonetically. Papa, India, Echo, Romeo, Papa, Oscar, November, Tango.
How do VHF wavelengths travel? Line of sight.
When is an aircraft required under IFR to have DME equipped in the aircraft? When they fly above 14000ft.
Created by: g153511
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