JFZ90
Not talking about Apache - that was a relatively simple programme. No conversion / modification programme to worry about, and no operational capability to maintain during fleet conversion, which is where detail and the devil lurk, and which always causes problems if you don't get the properly trained people. The Apache Customer recognised the need to train aircrew and made proper materiel and financial provision. The trouble was PE (at the 1* and 2* level I mentioned - same ones) followed current political dogma and entered into PFI contracting knowing precisely what the outcome would be - delay. Ask why the other programme didn't go PFI, at precisely the same time. Answer (a) it would prevent the ISD being met (b) no firm overseas follow on sales potential - so you fill in a short application for waiver (more a statement of non-intent!) and move swiftly on.
It's like I said in previous posts. If you want to truly understand the issues being discussed here, you must write down the aircraft and equipments, and then list problems, timescales, personalities and related policies of the day. Also, identify the successful programmes and do the same thing. Then you'll see the common denominators and solutions.