Originally Posted by
dixi188
ISTR the top spar of the horizontal stab had a known problem with cracking around one fastener. The NDT procedures used at the time to monitor the crack and inspect the centre and lower spars was not able to detect a crack in the centre spar. These cracks caused the stab to fail and fold up against the vertical stab.
Would it not be more likely that the stab failed
downwards, given that during normal 1G flight (even allowing for gusts) the stab is generating a down force?