Boeing 727-200 “Tri-Jet”
The Boeing 727-200 was a popular narrow-body tri-jet airliner that significantly expanded commercial aviation capabilities in the 1960s and 1970s, serving as a versatile medium-haul passenger aircraft for numerous airlines worldwide.
The Boeing 727 was the first commercial airplane to have an auxiliary power unit (APU) which allowed it to operate independently from ground power sources, revolutionizing airport operations
Cabin Environment
How the Boeing 727-200 affects jetlag recovery