Aviation Enthusiasts; (1 of 2) Ever seen a 5 engined 747SP? P&W Canada's testbed is interesting;

[A HERETIC I AM]

Somehow this slipped under my radar! It's been around for quite a while, but this is the first I had ever seen or heard of this particular testbed aircraft. I know General Electric operated a 747-200 as a testbed for years and I have also seen a 5th pylon mounted in the wing of a 747 used to ferry an engine, but I've never seen this particular type of modification with the smaller winglet mounted on the iconic hump of a 747;

Here's a few more articles I found on this interesting aircraft and some other photographs.

https://www.aviationpros.com/aircraft/commercial-airline/blog/10712153/pratt-whitneys-flying-test-bed

[KT2000]

1. Boeing makes beautiful planes

I hope they find themselves again.

[A HERETIC I AM]

2. Yes they do.

And yes, they will.

After the debacle with the 737 Max, they will have no choice.

[Disaffected]

3. Ay Caramba,

it mutated (just like the "brilliant" Corona virus).