
Igor Sikorsky’s world largest and first four-engine passenger plane, equipped with a with a promenade over the fuselage so that passengers could take a stroll, 1914
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View Reddit by eaglemaxie – View Source

Igor Sikorsky’s world largest and first four-engine passenger plane, equipped with a with a promenade over the fuselage so that passengers could take a stroll, 1914
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View Reddit by eaglemaxie – View Source
This is what modern airlines are missing; a promenade to take a little stroll and stretch the leggies
OSHA approved