I theory and what now looks like practice the DC-3 should last forever given no corrosion. Say you had a dc3 and used it between dca and lga at 9000ft or so, thats all you ever need as long as the pilots didn't bend it. the air loads at 160-180 mph are low especially for the tank that the dc3 is.
Also daily flying of an unpressurized aircraft allows air to flow thru the airframe this keeps it dry and corrosion free kind of like keeping it in the desert. This is why we'll see sh!tboxes and 99's for the next 100 years.
Even the dash fits here, now we all know its pressurized by it stays at lower altitudes where the diff is lower which makes for less stress in the pressure vessle. I think a few of ALG's dashes are around 30,000 if they haven't gone over it yet.
Speaking of US Check-Airnet, how about those Cessna 310s? When I flew´em from 1990 to 1993 they had anywhere from 10 to 13,000 hrs. I kinda crunched up a 13K hr machine at St Paul, totalled it... not my fault though, the prop came off! I see them around from time to time, they gotta be around 20,000 or more I´d guess...
I think Mr. Douglas was used at a dropzone in florida. It was also used in the Nick Nolte movie, "Mullholland Falls". They got paid to belly land Mr Douglas on the salt flats, with the gear up to film a sceen for the movie.
But anyway, they had better than 60,000 hours on the plane and that was 7 years ago.
I didn't actually fly that high time plane, but I did fart in it. And there was a whole plane load of skydivers that enjoyed that moment with me. Do you think that the troops that rode in that DC-3 would have ever imagined that people would jump for fun out of that plane...so many years after the war was over.
At one time Midwest Express (now Midwest Airlines) was flying the highest time DC-9. I believe that it had around 150K hours. Don't quote me on that though. Midex guys, how about a little help.
Lakes has a few C models that were very high cycle, don't remember exactly how much, but our impression was that they were among the high 1900's in world.
Piedmont operates the high time/cycle Dash 8 in the world 906HA.
DinoDash is used in all the Bombardier PowerPoint presentations as an example of the ruggedness of the 8.
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