Sorry Moo for diverging a bit more from your enlightened reply but I think I have to stand up and back NSF here.
eal401 said:
"Ah yes, the usual dismissive cr*p answer expected on here." but what did he expect from such an inane and ill thought out question in the first place? To quote eal401:
"...Curious as to what happened, and why it wasn't spotted prior to departing Doha. That's not a criticism, just wondering what happened "suddenly." Assuming your question wasn't rhetorical, HTF is anyone supposed to answer it? Are you just trying to impress us that you happened to be priveleged enough to be on a BA flight from Doha to LHR via Bahrain? It certainly sounds like that because there was absolutely no content of any worth in your preamble to the question.
NSF is quite right when he points out that things invariably happen 'suddenly'. Had you even considered that the effing hydraulic leak probably started AFTER the a/c left Doha and that's why you were delayed 4+ hours in Bahrain?

What happened 'suddenly' was that the hydraulic leak was spotted during the turnaround at Bahrain.
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Thanks for making the point NSF and thanks to Moo for the comprehensive answers to what was obviously an attempt to start a scare story... and we thought the press were bad!
eal401, why not just start a new thread with your question, either here or in the questions forum as it has nothing to do with this thread as had already been answered by Moo.
deleted - a little too abusive from you too, cb