Originally Posted by greenery
I will be flying to Turkey in a few weeks on Turkish Airlines and have a serious question about flying and the Islamic faith. I wonder how the largely Islamic passengers will pray during the long 10 hour flight to Istanbul. Will it be a silent personal prayer or will they pray at designated times in a formal exercise?
This is a serious question.
Sounds like something for the "Religious Traveler" forum.
The serious answer: most don't pray in any obvious ways during the flight; and for those individuals that may, they do so in the same way as most all praying passengers on the planet.
(Hajj flights can be quite a different story.)
An official call to prayer on Turkish Airlines via the PA system? Not routine -- and not on your route.

That is, such a thing is highly unlikely to happen on your flight.
What's the concern? That a formal, organized in-flight prayer -- never seen it on my Turkish Airlines flights -- will lead to the plane going up and down as people move about the cabin or in their seat?

No more than happens during meal service.