diplomatic requirements. During the Berlin Blockade, for example, pilots flying across Soviet-controlled German airspace were required to maintain very specific positioning within air corridors defined by the commander in charge of the airlift. Subsequent flights, both military and civilian, between West Germany and West Berlin during the Cold War were required to remain within their designated corridor or risk being shot down. Air corridors should not be confused with airways. Airways are navigational aids which a pilot generally may deviate from when circumstances warrant, while compliance with a designated air corridor is mandatory. References External links FAA Order JO 7400.2L, Procedures for Handling Airspace Matters, effective 2017-10-12 (with changes), accessed 2017-12-04 FAA Aeronautical Information Manual, Chapter 1 Cold War Berlin air corridor disagreement. Way Way