Company Description (as filed with the SEC)
The following represents terms and statistics specific to our business and industry. They are used by management to evaluate and measure operations, results, productivity and efficiency. Block Hour The time interval between when an aircraft departs the terminal until it arrives at the destination terminal. C Check High-level or “heavy” airframe maintenance checks, which are more intensive in scope than A Checks and are generally performed between 18 and 24 months depending on aircraft type. D Check High-level or “heavy” airframe maintenance checks, which are the most extensive in scope and are generally performed every six to nine years depending on aircraft type. ... More ...