Hi Lu
Thanks for the info.
There seems to be quite a large number of these type events, 747 elevators, 737 rudders, A320 flaps.
What is the certification standpoint, bearing in mind that there is real potential for accidents with this type of incident?
Is it just a case of testing to ensure that it is so unlikely that its not worth considering or are procedures written for these events in the operating handbooks?
Thanks again
Lungs