Project A39 Answered

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Teterboro School of Aeronautics *

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Mechanical Engineering

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Feb 20, 2024

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AVIATION INSTITUTE OF MAINTENANCE COMMUNICATION & NAVIGATION SYSTEMS PROJECT A39 (Level 1) Name: Juan Munoz Date: 11/20/2023 ITEM: Inspect, check, and service aircraft electronic communication and navigation systems, including VHF passenger address interphones and static discharge devices, aircraft VOR, ILS, LORAN, Radar beacon transponders, flight management computers, and GPWS. STUDENT PERFORMANCE GOALS OBJECTIVE: Understanding electronic communication and navigation systems PROCEDURE: 1. The student will answer a series of multiple-choice questions and answers. The student will research textbooks for each question and reference where the answer was located. 2. The student should utilize the following books to complete this project: FAA-H-8083-31 V2, AC43.13-1B & 2A and FAR Handbook. 3. Present your completed work to your instructor for evaluation. SCORING: ACCURATE ANSWERS = 50 Points = 2.5 Each ACCURATE REFERENCES = 50 Points = 2.5 Each 1. The acronym “DME” in communication and navigation systems means: a. Designated Mechanic Examiner. b. Designed Mechanical Equipment. c. Distance Measuring Equipment. Reference: FAA-H-8083-31 V2 11-50 2. Flights that operate outside the U.S. may obtain an Aircraft Radio Station License: a. By writing to the FAA. b. Applying online to the FCC. c. Applying online to the FAA. Reference: N/A 3. Radio waves travel at a speed of approximately: a. 186,000 Miles per Hour. b. 186,000 Miles per Second. c. 186,000 Miles per Minute. Reference: FAA-H-8083-31 V2 11-30 4. The radio frequency portion of the electromagnetic spectrum extends from approximately: a. 30 mHz to 3,000 MHz. b. 3 MHz to 3,000 mHz. c. 30kHz to 30,000 MHz. Reference : FAA-H-8083-31 V2 11-31 0db63fc3b5ebd76e4c657e18e00428e26f293529.docx 03/15/19 Page 1 of 4

5. The letters (RF) stand for: a. Radio Frequency. b. Radial Fluctuations. c. Ratio Follow up. Reference: FAA-H-8083-31 V2 7-18 6. The basic components of a communication system are: a. Transmitter, Receiver and Speakers. b. Transmitter, Antenna and Microphone. c. Transmitter, Receiver, Transmitter Antenna, Receiving Antenna, Microphone and a Headset or Speaker. Reference: FAA-H-8083-31 V2 11-29 7. The most common communication system in use today is: a. UHF. b. VHF. c. SHF. Reference: FAA-H-8083-31 V2 11-31 8. The acronym (ACARS) stands for: a. Airborne Communications Addressing and Reporting System. b. AirCraft Are Really Smart. c. Airborne Control Ammunition Rifle Sights. Reference: FAA-H-8083-31 V2 11-70 9. The Instrument Landing System (ILS), one of the facilities of the Federal Airways, a. Operates in the MFF portion of the electromagnetic spectrum. b. Operates in the VHF portion of the electromagnetic spectrum. c. Operates in the UHF portion of the electromagnetic spectrum. Reference: FAA-H-8083-31 V2 11-48 10.When three lights are utilized in a marker beacon system the light colors are: a. Blue, Amber and Red. (BAR) b. Red, Amber and Green. (RAG) c. Purple or Blue, Amber and White. (PAW) Reference: FAA-H-8083-31 V2 11-49 Figure 11-110 11.Distance Measuring Equipment (DME) antennas are mounted: a. On the upper surface of the wings near the wing tips. b. On the upper fuselage aft of the passenger compartment. c. On lower surface of the fuselage and aligned with the centerline of the aircraft. Reference: FAA-H-8083-31 V2 11-51 0db63fc3b5ebd76e4c657e18e00428e26f293529.docx 03/15/19 Page 2 of 4

12.Automatic Direction Finders (ADF) utilize: a. A beacon and loop antenna. b. A loop and sense antenna. c. A blade and ball antenna. Reference: FAA-H-8083-31 V2 11-45 13.When a ground-controlled radar operator asks the pilot of an airborne aircraft to “SQUAK IDENT”. The pilot will push the IDENT button and: a. His radar image will dim momentarily. b. His radar image will increase in brightness temporarily. c. His aircraft will send a signal to the radar operator and the operator will hear a chicken squawking sound. Reference: FAA-H-8083-31 V2 11-54 14.All ATC transponder test and inspections must be done: a. Every 24 months IAW FAR 43 Appendix F and FAR 91.413. b. Every annual inspection IAW FAR 43 Appendix D and FAR 91.413. c. Every 24 calendar months IAW FAR 43 Appendix F and FAR 91.413. Reference: FAA-H-8083-31 V2 11-55 15.Doppler navigation systems compute and display: a. Ground speed and drift angle of an aircraft in flight. b. Ground speed and drift angle of an aircraft on the runway. c. Airspeed, flight level and direction. Reference: N/A 16.All LORAN station manning and maintenance requirements are the responsibility of: a. The Air National Guard. b. The Coast Guard. c. The FAA. Reference: FAA-H-8083-31 V2 11-2 17.The space segment of the GPS system consists of: a. A constellation of 24 orbiting satellites with all 24 active. b. A constellation of 24 orbiting satellites with 20 active. c. A constellation of 24 orbiting satellites with 21 active. Reference: FAA-H-8083-31 V2 11-68 18.When installing radio equipment and wiring near units containing combustible fluids: a. Installation of baffles and shrouds are required. b. Installation of extra bonding straps are required. c. Installation of a fire extinguisher system is required. Reference: FAA-H-8083-31 V2 11-71 0db63fc3b5ebd76e4c657e18e00428e26f293529.docx 03/15/19 Page 3 of 4

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19.Bonding jumpers in radio equipment should never exceed: a. 0.0003 Ohms. b. 0.0300 Ohms. c. 0.003 Ohms. Reference: FAA-H-8083-31 V2 11-73 20.When installing coaxial cable (Transmission Lines) secure the cables along their length at intervals of: a. Every 12 inches. b. Every 2.5 feet. c. Every 24 inches. Reference: AC-43-13A CH 11-45 PAR 11-96 0db63fc3b5ebd76e4c657e18e00428e26f293529.docx 03/15/19 Page 4 of 4