747 Flight Deck escape reels.

[Hubbly]

Hi all

I have an extremely tecchy question, one which I have failed so far to get an answer to.

How long are the Inertia reels on the 747?

This is a two part Question:-
a) Length for a normal descent, i.e. out of the escape hatch and down the left side of the a/c.

b) Length for a right hand side descent i.e. out of the escape hatch over the dome and down the right hand side of the a/c.

This has been the subject of some serious debate, and would like to see if we can get some resolution on these questions.

Can anyone help?