The Bureau of Economic Analysis (BEA), part of the Department of Commerce, is conducting a mandatory survey called the Quarterly Survey of U.S. Airline Operators' Foreign Revenues and Expenses (BE-37). This survey collects data from U.S. airline operators involved in international transportation if their total revenues or expenses are $500,000 or more. Reports must be submitted using BEA's electronic system, and they are due 30 days after the end of each quarter. The survey aims to measure U.S. trade in transport services and is authorized by the International Investment and Trade in Services Survey Act.
Simple Explanation
The government wants to know how much money airlines make and spend when flying to other countries, to help understand how this affects the economy. So, it asks big U.S. airlines to tell them these details every few months.