Cheers Sunfish, I do agree with all those points.
Planning is everything... When it comes to transport category, no two aircraft are ever quite the same, which leads to headaches when you want to apply the same (large) mod to a whole fleet. Then just add a deadline...!
I'm just a little uncertain as to what has really happened here...I guess we are all left in the dark whilst this issue is being dealt with. So I'm guessing that:
Someone has discovered that part of the SB/AD hasn't been signed off as completed, or that paperwork is missing. So while technically that is "a paperwork issue" as the QF spokesman said
, there is no guarantee that particular part of the SB was ever carried out. Hence the aircraft are grounded until they have been inspected to ensure that the SB was completed in its entirety. Makes a bit more sense.