How did frank succeed in getting more information on Pan Am and Pan Am's pilots?

Frank succeeded in gathering information on Pan Am and its pilots by leveraging his charm and intelligence to engage in casual conversations with employees and pilots at airports. He often posed as a pilot himself, which allowed him to blend in and gain trust, leading to valuable insights. Additionally, he utilized his resourcefulness to access documents and records that provided further details about the airline's operations and personnel. This combination of tactics made it easier for him to collect the information he needed.