Aircraft Noise Control MCQs January 8, 2026August 26, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. What is the primary federal agency responsible for regulating aircraft noise in the United States? (A) Environmental Protection Agency (EPA) (B) Federal Aviation Administration (FAA) (C) National Aeronautics and Space Administration (NASA) (D) Federal Communications Commission (FCC) 2. Which part of the Code of Federal Regulations (CFR) deals with aircraft noise standards? (A) 49 CFR Part 150 (B) 14 CFR Part 36 (C) 14 CFR Part 150 (D) 49 CFR Part 36 3. What is the primary measurement unit used for quantifying aircraft noise? (A) Watts (W) (B) Hertz (Hz) (C) Pascals (Pa) (D) Decibels (dB) 4. Which type of noise is associated with the sound of aircraft engines at takeoff? (A) Lateral noise (B) Sideline noise (C) Flyover noise (D) Ground noise 5. What does the term “Lmax” represent in noise measurement? (A) The average noise level over a period (B) The maximum noise level during a flight event (C) The noise level at a specific frequency (D) The total noise energy over a flight 6. Which federal law requires airports to prepare noise exposure maps and noise compatibility programs? (A) Noise Control Act (B) Airport Noise and Capacity Act (ANCA) (C) Clean Air Act (D) National Environmental Policy Act (NEPA) 7. What is the purpose of a Noise Compatibility Program? (A) To enhance airport capacity (B) To improve air traffic control systems (C) To increase flight frequency (D) To reduce aircraft noise impacts on surrounding communities 8. The “Day-Night Average Sound Level” (Ldn) accounts for: (A) Only daytime noise (B) Daytime and nighttime noise with a penalty for nighttime noise (C) Nighttime noise only (D) Only noise from airport operations 9. Which type of noise is commonly reduced by the use of quieter aircraft engines? (A) White noise (B) High-frequency noise (C) Mid-frequency noise (D) Low-frequency noise 10. The purpose of the FAA’s Part 150 Noise Compatibility Study is to: (A) Assess and mitigate the impact of aircraft noise on communities (B) Improve fuel efficiency of aircraft (C) Develop new flight paths (D) Increase airport security 11. Which type of aircraft noise is most influenced by flight operations close to the airport? (A) Flyover noise (B) Sideline noise (C) Approach noise (D) Ground noise 12. What is a typical noise reduction measure for residential areas near airports? (A) Planting trees (B) Installing noise barriers (C) Increasing runway length (D) Modifying aircraft flight paths 13. Which system is used by airports to monitor and manage noise levels? (A) Noise and Flight Track Monitoring System (NFTMS) (B) Noise Abatement System (NAS) (C) Aircraft Noise Management System (ANMS) (D) Flight Management System (FMS) 14. What is the purpose of a “fly neighborly” program? (A) To minimize aircraft noise by optimizing flight paths and procedures (B) To ensure aircraft fly at higher altitudes (C) To increase aircraft noise (D) To improve aircraft performance 15. The “Equivalent Continuous Sound Level” (Leq) is used to: (A) Measure peak noise levels (B) Measure instantaneous noise levels (C) Provide an average noise level over time (D) Calculate noise levels for specific aircraft types 16. Which noise metric applies extra weighting to nighttime noise? (A) Lmax (B) L10 (C) Leq (D) Ldn 17. Altering flight paths to reduce noise is an example of: (A) Operational procedures (B) Engine modifications (C) Noise barriers (D) Sound insulation 18. Which agency enforces aircraft noise emission regulations? (A) FAA (B) EPA (C) FTC (D) DOT 19. Which aircraft design feature reduces noise emissions? (A) Turbojet engines (B) Conventional engines (C) High bypass ratio engines (D) Non-silent engines 20. The primary goal of ANCA is to: (A) Increase aircraft operations (B) Expand airport infrastructure (C) Manage noise impacts and airport capacity (D) Enhance in-flight entertainment