You don't just get in a 727 and take off. You need pre-flight checks and ground crew support plus fresh fuel.Seems to me the 727 was originally designed for short runways and unimproved airports. It had an auxiliary power unit to start the engines without ground support, if need be. So, assuming it had fuel, I guess you could steal it all by yourself.
I dunno. After a year I would think it'd need at least an oil change. Can one person actually even fly a 727 alone?
Sounds like there might have been some bribery of airport personnel.