Good luck obtaining this data!
I know many have tried and failed in the past - no-one will speak openly about this issue.
Maybe PPruNe would be willing to run an anonymous poll in the airline sections asking about this? I'm willing to bet the incidence is higher than we think.
I'm guessing you have a pretty good reason for asking this question...
Last edited by ECAM_Actions; 4th Nov 2012 at 16:54.