AMT 112 Midterm Exam Pointers to Review PDF

WASA 16 OCT 2024 ACFT COMM AND NAV SYSTEM POINTERS TO REVIEW – MIDTERM EXAMINATION VERY HIGH FREQUENCY (VHF) – It is the frequencies between 30 MHz equipped with an altitude encoder, the transponder also provides...

WASA 16 OCT 2024 ACFT COMM AND NAV SYSTEM POINTERS TO REVIEW – MIDTERM EXAMINATION VERY HIGH FREQUENCY (VHF) – It is the frequencies between 30 MHz equipped with an altitude encoder, the transponder also provides the and 300 MHz. pressure altitude of the aircraft to be displayed adjacent to the on- screen blip that represents the aircraft. (Figure 11-123) VHF OMNIDIRECTIONAL RANGE (VOR) – It consists of thousands of land-based transmitter stations that communicate with radio AIR TRAFFIC CONTROLLER (ATC) – Its primary purpose is to prevent receiving equipment on board aircraft. collisions, organize and expedite the flow of traffic in the air, and provide information and other support for pilots. FOUR MAIN VOR COMPONENTS 1. Receiver TWO TYPES OF RADARS USED BY ATC 2. Visual Indicator 1. Primary Radar – transmits directional UHF or SHF radio 3. Frequency Selector waves sequentially in all directions. 4. Antennas 2. Secondary Surveillance Radar (SSR) – It is used by ATC to verify the aircraft’s position and to add the third dimension TACTICAL AIR NAVIGATION (TACAN) – The U.S. military navigational of altitude to its location. system that operates similarly to the VOR system. FLIGHT DATA PROCESSOR (FDP) – It assigns the beacon code and VOR and TACAN (VORTAC) – It is a site where both VOR and TACAN searches flight plan data for useful information on be displayed on share a location. screen next to the target in a data block for each aircraft. DISTANCE MEASURING EQUIPMENT (DME) – A system that TITLE 14 CODE OF FEDERAL REGULATIONS (CFR) PART 91, SECTION calculates the distance from the aircraft to the DME unit at the 91.413 – States that all transponders on aircraft flown into controlled VORTAC ground station and displays it on the flight deck. DME airspace are required to be inspected and tested in accordance with operates in the UHF frequency range from 962 MHz to 1213 MHz. 14 CFR part 43, Appendix F, every 24 calendar months. FIVE MAIN DME COMPONENTS WHO ARE APPROVED TO CONDUCT TRANSPONDER INSPECTION AND 1. Airborne DME transceiver TESTING? 2. Display 1. Only an appropriately rated repair station. 3. Antenna 2. The aircraft manufacturer (if it installed transponder). 4. Ground-based DME unit 3. Holders of a continuous airworthy program. 5. Antenna of its ground-based DME unit CHART SYMBOLS OPERATING PRINCIPLES OF A DME SYSTEM – A carrier signal transmitted from the aircraft is modulated with a string of integration VOR pulses. The ground unit receives the pulses and returns a signal to the aircraft. The time that transpires for the signal to be sent and returned is calculated and converted into nautical miles for display. Time to DME station and speed are also calculated and displayed. VOR/DME AREA NAVIGATION (RNAV) - Earlier known as random navigation. It is a general term used to describe the navigation from point A to point B without direct over-flight of navigational aids, such as VOR stations TACAN or ADF non-directional beacons. All RNAV systems make use of waypoints. VORTAC WAYPOINT – It is a designated geographical location or point used for route definition or progress-reporting purposes. It can be defined or WAYPOINT described by using latitude/longitude grid coordinates or, in the case of VOR based RNAV, described as a point on a VOR radial followed by that point’s distance from the VOR station (i.e., 200/25 means a point AIRPORT 25 miles from the VOR station on the 200° radial). RADIO BEACON TRANSPONDER – Provides positive identification and location of an aircraft on the radar screens of ATC. For each aircraft