"Usually, it happens because a pilot or mechanic didn't do the preflight inspection properly," he said.
So that is why Boeing have SBs on this very subject, corrosion and bolt failure.
"As viewed from the ground the canoe fairing was attached during the pre-flight inspection", they said.
Where do I file the libel case.....??????
Yes could have been very serious if the fairing had wrapped round the stabiliser leading edge.
TW