Hi Radar,
I see you have also posted this same question in the Cabin Crew Forum - just for future reference you are requested to only ever post a thread in one forum at a time, it saves bandwith and ensures all your answers are together.
As I think you will get a wider selection of answers in the CC forum I am going to lock this thread here and any cockpit crew or safety professionals reading this can also go that forum to post their answer.
BlueEagle - Moderator.
Thread now here:
http://www.pprune.org/forums/showthr...threadid=80782