Don't know about this particular model of Tu154, but flew one in China long time ago and was seated a long way aft on the port side. Next to me was the emergency exit, which was very close to the engine and in place of the window seat was a box containing the slide. The procedure said something like:
Remove emergency exit,
Open box containing slide.
Throw slide out.
Open gas cylinder to inflate slide.
Jump, sucker.
Found it amusing at the time.
Per