...always.
The 1649 had fuel (9800 gallons) for 23+ hours, but oil
usually ran out after 19...not good.
Then, with all power assisted flight controls, hydraulic leaks abounded.
Did I mention noisey.........yep, sure was, but sounded great.
I personally was very lucky to have flown all the large Lockheed civil aeroplanes...Constellation, Electra, and the TriStar.
In fact, just did a fully automatic landing with a tri-motor at GQNN last week.
PFM....
It simply does
not get any better.