Interesting reading.
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Sounds like many engineers at BA were aware that this was going on, shame they not aware of an MOR form they can fill in and give to the CAA, if only one engineer leaves BA after this one case comes to life, the question must be, how many other engineers inside BA use the same system and feel it will OK as when they they get found out, it will be Ok.
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Think BA will have to accept that aircraft going through maint checks with no maint cover avail, but aircraft come out on time, might be a problem if the CAA find that out, guess the AAIB will be busy in the future.
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Am sure that the aircraft that were maintained when engineer on holiday were removed from service and checks were actioned again, just like the pro-active maint checks that were actioned on the BA320 that lost all elec power during flt last year.(or did the AAIB have to order the checks, I forget).
Looks like the wake up call has tried a few times, I wonder what the alarm will look like.???