I recall the late 1960s in USA...
xxx
Some F/Os with Continental Airlines could not be upgraded to captain, until they had reached their 23rd birthday, minimum age for issue of the FAA ATPL. So, these few gentlemen were probably sitting in the LH seat of 720s or 727s by the age of 23 plus a few weeks. I also recall some PSA pilots having that situation. With PanAm, we had a 27 years old checking-out as 747 captain.
xxx
Back then, the FAA ATPL required 1,200 hours TT as pilot...
Try that with your so called MPL, or whatever you call that piece of paper.
Was the good old days, with the barrel of oil at $16.oo.
xxx
Happy contrails
