55 years in commercial service
What is the longest time an aircraft has been in commercial service with one airline?
I ask because I just read that Air Greenland, just did an engine and a tail roter change on an S61 helicopter with the registration OY-HAG. This helicopter was registered in August 1965 and has been flying for Air Greenland ever since, it has 45000 hours and 79000 landings.
I find this quite amazing for a helicopter, quite the contrast to the A380 wich is being pulled out of service 15 years after it started.