It’s missing an engine cover...............
Better than missing an engine...
The area behind the turbine exhaust outlet is painted black so that soot from the turbine doesn't show as easily.
Knew a guy from a former life who went to Russia regularly for business.
He told me there was a time when they couldn't get the second engine on a two engine plane started. They announced there would be a brief delay and to stay seated with seat-belts fastened.
Oh, goody, he thought. They are going to get us a replacement plane. But instead, another team arrived and tried to start the second engine.
They couldn't do it either, so the plane took off on one engine. Lucky for him, it landed safely at the destination.
“It’s missing an engine cover”
That’s a feature......optimizes engine temp. 🫡