The Official Airline Guide (OAG) is used by the INM to obtain what kind of data?

• A. Flight schedules
• B. Weather data
• C. Noise measurements
• D. Population data

Answer: (A)

The data being tested is flight schedules. The Official Airline Guide is a comprehensive database of airline timetables, listing each flight’s origin and destination, departure and arrival times, routes, and frequencies. The INM uses these schedules to input the times and patterns of aircraft movements into the model, which is essential for predicting where and when noise will occur. Weather data, noise measurements, and population data come from different sources and serve other aspects of environmental analysis, not the schedule information found in the OAG.