Grimly Curmudgeon wrote:
The main thrust is taken into the wing via a thrust
mounting, connected to the engine pylon and the suspension of the weight
is taken up by adjustable links to the side of the engine. As long as
the engine was not designed to be mounted inside of the envelope of the
structure, there is no reason to use the cranage that is used by the book.

And what happens when somebody inadvertently applies the wrong force to
the engine when it's being mounted, or it isn't perfectly aligned, so
it gets pushed round a bit? "**** it, that'll do", when used in a
vehicle workshop, or even in front-line military service, is perfectly
ok most of the time, but NOT on a civil airliner.

Agreed. The main problem with not doing it by the book is that if
something goes wrong, there's no way to admit it without getting into
trouble.

Point of information, please: what is different and special about the
proper engine cranage, and what made it harder or less convenient to
use?


--
Ian White