During the late 1920s and early 1930s, there was a large black coloured airship hangar at the site of Karachi Airport, constructed for the British HMA R101, at the time, the largest aircraft ever built. Only three hangars were ever built in the world to dock and hangar Britain's fleet of passenger airships. However, the R101 never arrived in Karachi (then part of the British Raj) as it crashed and exploded just 8 hours into its maiden flight over Beauvais France, killing all but 6 of its 54 passengers and crew. This hangar was so huge that aircraft often used it as a visual marker while attempting VFR landings at Karachi. Over the years, the hangar became known as the landmark of Karachi, until it was demolished by order of then-President Ayub Khan in the 1960s.