If you are planning to do an evaluation of an evac. Try this:
- Only brief the pax like the cabin crew will do on a regular flight
- do not anounce an emergency but tell the pax that first ten pax out of the airplane receive $1000 cash.
You will now see how it is at a real emergency. Because well informed, calm pax evacuating an aircraft does not exist.
(This test has allready been done on a B747. The evactime was 13 minutes. Remember the legal requiered evactime is 90secs)