To answer the question from reply #18 regarding the Air Transat A330 landing at Lajes... yes, the A330 was ETOPS certified, I believe it would have been 180 minutes but I'm not absolutely sure. That problem, however, was not ETOPS related, it was a fuel problem. I can't remember the exact details, but somehow the aircraft developed a fuel leak from the right wing (possibly through one of the fuel-dump valves, although I'm not certain). The pilots had the crossfeed valve open, and as fuel emptied through the right wing, more fuel was pumped from the left wing to the right wing to compensate for the weight imbalance, therefore leaking fuel from both wings rather than just the right one. Had the crossfeed valve not been open, the left wing fuel would have remained, and the problem would not have been as serious. The pilots only noticed the problem when they got "Low Fuel" alerts on the ECAM display, and when they looked at the ECAM fuel display they realised what was happening. They immediately switched off the crossfeed, and, extremely luckily, just about managed to make it to the runway at Lajes. The landing was hard and fast - the crew needed to maintain speed without power, resulting in a higher rate of descent. Damage was caused to the main landing gear - I remember seeing photos in Airliner World of the bogies looking crippled but more or less intact. The A330 remained ETOPS certified, but according to the magazine, the Canadian Authorities temporarily withdrew Air Transat's ETOPS licence until the investigation was completed, meaning they had to operate ETOPS routes with Tristars until they were given their licence back.
This, however, was not an ETOPS problem - it was not engine related, and if a trijet or four-jet airliner had developed a similar leak, they would have been in the same difficulty. The revoking of the licence by the Canadian authorities was a precautionary measure.
I am posting this only from memory, as it was a couple of years ago at least... if anyone has anything to add or correct, please do so
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