Aircraft Systems 2 Exam 1 Practice

These questions are part of the practice quiz. Start practicing

• A prerecorded emergency announcement in flight may be automatically initiated over a large aircraft's passenger address system in the event of a ______.
• DME distance is the slant range to the station, not the ground distance. What term describes this distance?
• In ECS, what is the role of mixing units?
• Which component is primarily responsible for providing GPS position information to the pilot?
• Which ECAM mode takes priority over all other display modes?
• Fuses and circuit breakers in an aircraft electrical system protect which component?
• Which license must be issued by the FCC for a radio transmitter installed in an aircraft used for international flights?
• The unit in an EFIS that allows the pilot to select the appropriate system configuration for the current flight situation is the __________.
• Where are typical fire extinguishing bottles located on commercial aircraft, and what discharge sequences may exist?
• Which of the following is typically part of the ECS to condition and distribute bleed air?
• Explain the role of the landing gear in hydraulic systems and how retarding or extension is controlled.
• The signals from the compass locators are received by the __________ receiver.
• Which band is commonly used for civilian aircraft ground communication?
• The TAWS warns the flight crew of a dangerous situation with both visual and
• RNAV is able to direct a pilot to a waypoint that has been defined and entered into the equipment as the radial and distance from a/an ______.
• Most civilian aircraft-ground communications occur in which frequency band?
• What action may the cockpit fire panel enable during a fire event?
• Distance Measuring Equipment (DME) is a ______ system.
• Which statement best describes the typical bleed air sources on a large transport aircraft and their main uses?
• What is the main difference between high-pressure and low-pressure bleed air in terms of availability and uses?
• What is the function of an ice detector and where are ice detection sensors typically located?
• What does the oxygen flow indicator on passenger masks show?
• Which avionics unit is typically designed to be quickly replaced on the flight line?
• What is the primary purpose of a bleed air automatic isolation valve?
• In large transport aircraft, pneumatic anti-ice systems are typically deployed for which surfaces?
• Before working on integrated circuits, wear a wrist strap that connects your body to what?
• The system that allows an airline ground facility to monitor conditions existing in an aircraft in flight is called the Aircraft Communication Addressing and Reporting System (ACARS).
• Which component is primarily responsible for commanding the outflow valve to maintain the commanded cabin altitude?
• The installation of a piece of electronic equipment that is included in the aircraft equipment list is considered to be a what alteration?
• What is the role of the outflow valve in maintaining cabin differential pressure?
• When the Left-Right indicator is used with a localizer signal, it is _____________ (more or less) sensitive than it is when it is used with a VOR signal.
• How do pneumatic anti-ice and electric anti-ice systems differ in operation and typical applications?
• For a single-engine aircraft, where is the preferred location for a VOR antenna, and what should the V be oriented toward?
• During a pressurization fault, when should an emergency descent be considered?
• Which event should trigger an automatic prerecorded PA message on a large passenger airliner?
• A component that can be changed by technicians on the flight line is called a/an __________.
• The two fields that exist in a radio antenna are the:
• What are typical indications of a flight control surface runaway, and what procedures might a pilot follow?
• Emergency locator transmitters operate on three frequencies: 121.5 MHz, 243 MHz, and which other frequency?
• A superheterodyne circuit is used in a radio ____.
• How are nose wheel steering and rudder control surfaces powered?
• Two main advantages of WAAS over GPS are its
• A single-point system that allows a flight crew to initiate and implement a flight plan and monitor its operation is the
• Radio waves travel through space at a speed of about how many miles per second?
• What are typical procedures when a loss of redundancy occurs in a three-hydraulic-system aircraft?
• When activated, the ELT battery must be capable of transmitting for at least how many hours?
• The TCAS 3D map includes which three aircraft data fields?
• Where is the marker beacon antenna typically mounted on the aircraft?
• DME operates in the ______ band.
• Before installing a rigid antenna on a vertical fin, the installation must be evaluated for which two characteristics?
• Which component provides vertical guidance in the ILS?
• SSB is the primary type of transmission for communication in which band?
• Which agency issues the license required to perform certain tuning operations on radio transmitters?
• Bonding jumpers for connecting a shock-mounted equipment rack to the aircraft structure are normally made of braided what?
• If RAM is normally volatile, what happens to its data when power is removed?
• In a FADEC-controlled start, ignition after light-off is:
• What type of cable is used to connect an antenna to a transmitter?
• Which system provides warnings of dangerous terrain to the flight crew?
• Bonding jumpers for connecting a shock-mounted equipment rack to the airframe are connected to which component?
• Which indicators best identify environmental control system pack faults?
• Which statement is true about the ILS localizer in relation to VOR hardware?
• RAM is normally __________.
• During the start sequence, what happens after light-off to the starter?
• The self-diagnostic portion of a digital system installed in an aircraft is called __________.
• LORAN C operates in the ______ range.
• What is the primary function of the outflow valve in the pressurization system?
• After installing or removing electronic equipment, changes must be recorded in which records?
• What does the acronym EHSI stand for?
• The Automatic Direction Finder (ADF) operates in which bands?
• An ELT is normally installed as far as possible in which direction from the nose of the aircraft?
• In electric anti-ice systems, what is used to heat the surfaces?
• Electric anti-ice systems may be used for which scenarios?
• What are common indicators of a hydraulic system fault and how does the crew respond?
• What are typical indications of an oxygen system failure or depletion in flight?
• What sensors determine the demand for environmental control packs?
• What are the main differences between primary and secondary fuel pumps and what triggers their operation?
• When a Radio Magnetic Indicator is driven by a VOR, the needle points to which bearing?
• Which agency licenses tuning operations on radio transmitters?
• Which steps are typical in a pressurization fault checklist?
• The unit in an EFIS that receives and processes the input signals from aircraft and engine sensors and sends it to the appropriate display is the __________.
• Which of the following lists three critical characteristics of a radio antenna?
• Radio waves emitted from a vertical whip antenna are best picked up by which type of receiving antenna?
• To achieve a three-dimensional fix (latitude, longitude, and altitude), a GPS receiver must lock onto at least how many satellites?
• What is the purpose of an accumulator in a hydraulic system?
• TAWS has essentially replaced the
• An ELT activation is triggered by an inertial switch sensitive to impact along which axis?
• Which ILS component provides lateral guidance to the runway centerline?
• Which option lists memory types correctly?
• Most ELTs are powered by which type of power source?
• The heat generated by avionics is removed by air from which system?
• The loop antenna used with an ADF system is which type?
• What is the minimum clearance distance required between an aircraft seat and electronic equipment installed beneath it when the seat is loaded with 6.6 times its design load?
• The DME antenna is normally mounted on the centerline of the fuselage on which surface?
• Which statement about the use of coaxial cables in antenna installations is true?
• What are the roles of the essential bus, nonessential bus, and battery in electrical power management?
• What protects wiring from overcurrent in an aircraft electrical system?
• TAWS data about location is obtained from the GPS receiver.
• If a Class II TCAS detects two aircraft on a potential collision course, it will warn one to ______ and the other to ______.
• What is the minimum duration, in hours, that an ELT battery must power transmission after activation?
• Explain the concept of a cross-bleed start and why it might be needed?
• Explain the role of heat exchangers in the ECS packs.
• What is the function of the ignition system during starting and normal operation?
• On a color weather radar, which color denotes the area with the heaviest precipitation?
• When a warning flag appears on an EHSI or HSI for a function such as NAV, HDG, or GS, what is the status of that function?
• What does the acronym EADI stand for?
• What happens to the ADF indicator as the aircraft heading changes?
• The glide slope used with an ILS operates in the ____________ band.
• When a radar controller needs to identify a specific aircraft on the radar scope, which button should the pilot press on the transponder?
• The distance shown on a DME indicator ______ the actual distance over the ground from the location of the aircraft to the station.
• Which component is a main part of the aircraft environmental control system (ECS)?
• Radio waves travel at approximately how many meters per second in vacuum?
• If you are going to operationally check an analog ELT, the test should be performed within how many minutes after any hour?
• Which of the following is a typical use of bleed air from engine bleed sources?
• How many independent hydraulic systems are typical on large transport aircraft, and what are their general roles?
• What is the minimum bend radius for coaxial cable expressed as a multiple of its diameter?
• RNAV waypoints are defined as radial and distance from a ______.
• What is the purpose of crossfeeding in a three-hydraulic-system aircraft when one system fails?
• What triggers the environmental control system packs to start automatically after engine start?
• The RNAV deviation indicator expresses deviation in which form?
• When would a fuel crossfeed be used to maintain engine reliability?
• What is a typical sequence for an engine anti-ice system to prevent ice on engine inlets?
• A transponder can reply to the ground interrogator on any of _______________ codes the pilot can select.
• What bearing information does the RMI provide when driven by a VOR?
• Which cable type should not be bundled with other wires?
• GPWS stands for
• What is the role of the start selector in the engine start sequence?
• What is the main purpose of the symbol generator in an EFIS?
• Which two antennas does an ADF system require?
• Before installing a rigid antenna on a vertical fin, the installation must be evaluated for which two characteristics?
• RAM _____________ allow data to be written into the memory as well as read from it.
• Coaxial cable bend radius should not be less than how many times the cable diameter?
• Which ILS component provides vertical guidance?
• What is the purpose of a hydraulic shut-off valve?
• The radio-frequency carrier used in a radio transmitter is produced by a crystal-controlled oscillator.
• ACARS stands for which of the following?
• Which three engine primary parameters are displayed on the upper display of an EICAS?
• Which three data fields are shown on the TCAS 3D map?
• The VOR antenna and receiver are used for which ILS component?
• When an automatic direction finder is installed on an aircraft for the first time, the loop antenna should be checked for which error?
• VOR navigation operates in which radio band?
• How is avionics cooling typically achieved and why is it important?
• How does the pitot-static system provide air data and what are common failure indications of pitot static blockage?
• When Mode C is selected on the transponder, the altitude data is taken from the __________________________ .
• The inertial navigation system (INS) is dependent upon ground-based electronic signals?
• The TAWS receives its location data from the
• When a piece of electronic equipment is installed on an aircraft according to data included with a Supplemental Type Certificate, the work must be recorded on an FAA Form
• How does an oxygen system supply passenger breathing oxygen in a depressurized cabin?
• Which term describes the property of an antenna that determines the direction of its radiation pattern?
• How does the flight control system use hydraulic power to move control surfaces, and what happens in a loss of hydraulic pressure?
• If environmental control system packs fault, what is a typical crew action?
• The portion of an ILS that provides guidance down the center line of the instrument runway is the __________________ .
• Which ADF component is typically used to receive commercial broadcast stations?
• The RF carrier in a crystal-controlled transmitter is produced by which component?
• A fully functioning GPS uses how many satellites?
• What is the typical automatic response when a fire is detected in the engine nacelle by the fire detection system?
• The carrier frequency of the marker beacon used with an ILS is ______ MHz.
• The dial of an RMI indicates which heading reference?
• Weather radar energy is reflected from which of the following?
• How does the APU support electrical and pneumatic systems during ground operations?
• What is the purpose of an environmental control system pack, and what are its main stages?
• For maximum efficiency, the length of an antenna should be what fraction of a wavelength?
• What is the polarization orientation of the VOR antenna?
• Compass locators used with an ILS operate in the __________ band.
• What is the primary source of air used for engine inlet anti-ice?
• How does a fuel crossfeed system help manage weight distribution and engine reliability?
• How does cabin pressurization maintain the desired cabin altitude during altitude changes?
• If a hole is cut in the aircraft skin for an antenna, which reinforcement is riveted inside the skin to restore strength?
• Which parameter is displayed on the upper display of EICAS along with EGT and EPR?
• When an airline ground facility wishes to contact one of its aircraft in flight, the system used is the SELCAL system.
• What are the three basic components in a digital computer?
• A loop antenna _______.
• Most aircraft communication by planes operating over oceans is done in which frequency band?
• One difference between AM and SSB is that SSB requires a ______ band of frequencies for its transmission.
• An ELT is activated by an inertial switch that senses impact forces parallel to which axis?
• Name the two types of memory in a digital computer.
• Which source commonly supplies bleed air to environmental control packs on many jets?
• The VHF V-dipole antenna mounted on top of the cabin or on the vertical fin is used by which two navigation aids?
• What term describes the reinforcement riveted inside the skin after a hole is cut for an antenna?
• For an ADF system, which combination provides bearing information?
• The carrier transmitted by a marker beacon used with an ILS has a frequency of ___________ MHz.
• An ELT battery must be replaced when it has been installed for what percent of its rated usable life?
• Describe the role of the environmental control system’s precooler and how it interacts with ram air cooling.
• Coaxial cable should be secured along its length at approximately what interval in feet?
• Commercial broadcast stations are usually received by which ADF component?
• Which type of wires provides shielding to prevent electromagnetic interference in avionics?
• What is the function and typical location of cabin pressure relief/vent valves?
• How does a FADEC monitor engine performance and protect against faults?
• Most ELTs are powered by which power source?
• What is the purpose of a fuel jettison system and when is it typically used?
• Describe the typical sequence of a FADEC-controlled engine start and the role of ignition timing.
• The VOR Course Deviation Indicator's indication changes with aircraft heading.
• Which system is used to alert a specific in-flight aircraft without a voice call?
• The acronym BITE stands for which term?
• TCAS operates on signals from other airplanes whose transponders are operating in Mode ___.
• In a jet engine start sequence using an electric starter, which of the following orders correctly describes the steps?
• In an aircraft, what is the primary source of electrical energy?
• What is the purpose of the fire detection loop in engine compartments, and what action does it trigger when a fire is detected?
• Scratches, paint flakes, or surface distortion near which component can cause an erroneous static pressure indication?
• On most aircraft, the DME antenna is mounted on the centerline of the fuselage on which surface?
• To prevent electromagnetic interference with signals to sensitive avionics, which type of wires should be used?
• If a bleed air leak is detected, how does the automatic isolation valve respond?
• What is the purpose of cabin pressurization differential pressure limits, and how is cabin altitude controlled during climb and cruise?
• Which of the following is the third frequency used by emergency locator transmitters, alongside 121.5 MHz and 243 MHz?
• A radar altimeter shows the pilot the actual height of the aircraft above
• Where is the anti-ice control valve located and what does it do?
• The deviation indicator for an RNAV receiver shows the ______ deviation from the desired course.
• The replacement date for an ELT battery must be legibly marked on which part of the equipment?
• VHF radio communication travels primarily by which type of waves?
• Static dischargers dissipate static electricity into the atmosphere at what current level?
• What is the difference between an engine shutdown and an engine auto-ignition event in the ignition system?
• Weather radar returns energy that is reflected from
• Why are there three independent hydraulic systems on large transport aircraft?
• Should coaxial cable be included in a bundle with other wires?
• The old four-course radio range operated in which frequency range?
• Which statement about the VOR's Course Deviation Indicator response to heading changes is true?
• What is bleed air used for in anti-ice and pack systems?
• How do cabin altitude sensors and differential pressure sensors interact with the cabin pressurization controller to maintain safe conditions?
• LORAN C operates in which radio frequency range?
• Quadrantal error is an issue associated with which component of the automatic direction finder?
• An ELT is normally installed in the aircraft as far as possible in which direction?
• The localizer used with an ILS operates in the ____________ band.
• What is the most popular display type for GPS?
• When Mode C is selected, the altitude data comes from the ______.
• Altitude information is used by the air data computer to convert indicated airspeed into which quantity?
• Which statement about SSB versus AM is true?
• A radio wave with a frequency of 136 MHz has a wavelength of approximately how many meters?
• How do engine and cargo fire detection and suppression systems distinguish between areas?
• What is the described purpose of the Flight Management Computer System?
• The air data computer uses total air temperature to convert indicated airspeed into which airspeed?
• A pilot _________________ (does or does not) manually tune the glide slope receiver.
• What is the purpose of ram air in the environmental control system (ECS) and how is it used for cooling in flight?
• Operation of an analog ELT may be verified by tuning the VHF receiver to which frequency and activating the transmitter momentarily?
• Which of the following is NOT one of the antennas used by an ADF system?
• What safety feature prevents full rudder authority at low speeds?
• What FAA form is used to document the installation of equipment per Supplemental Type Certificate data?
• In a typical airliner electrical system, what are the primary sources of electrical power and how is power distributed to buses?
• Name common types of hydraulic actuators used for flight controls.
• Which pair of displays are part of the Electronic Flight Instrument System (EFIS)?