Originally Posted by
imperial shifter
Has anybody got any evidence that this is particularly an A320 / V2500 issue?
Depends what you mean by "particularly".
Yes, fan cowls fall off other aircraft types, but the fact that there have been around 40 such events on the A320 family (not just IAE-engined variants) is partly because there are so many of them in service and partly because the design of the door makes it possible to miss the fact that they aren't latched.
Compared that with the 737, for example, where the rate of cowl loss events is (I think) around 25% of that for the Airbus. Here, although the nacelle also comes from Rohr/Goodrich/UTC, the latches are different and, because of the way the doors hang, an unlatched door is much easier to detect.
Incidentally, there's an interesting statistic in the AAIB report on the Heathrow incident, namely that IAE-powered Airbuses are more likely to lose the doors from the left engine, whereas for CFM-powered variants it's the right engine. In both cases, the latches are on the inboard side of the relevant engine.