Yes, there is GTA V a Boeing 747 and she’s easier to find than a banshee. The strange thing is that you can steal the small private jet and this huge thing, but there appears to be no way to get on the medium-sized plane. Just by the way: don’t forget to take a parachute with you!
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GTA V: How to quickly get a tank, a fighter jet and a passenger plane
GTA V: Online Patch 1.15 – “Walking on Water and in the Air” Glitch (Guide)