Mutt,
I will give you just a small example of why AAI is suspect.
In 1998, some of the TriStars were fitted with GPS equipment (Trimble 8100). On the first installation, the HSI dis-agreed with the selected course by ninety degrees (to port) due to an incorrect installation and interface. AAI "maintenance" was UNABLE to correct the problem, and it had to be corrected by one rather intelligent F/E by accessing the maintenance pages, and a correct display was the result.
On later flights, it was discovered that AAI maintenance techs had accessed the relevant maintenance page, and returned the display to "port 90"....
Two of the TriStars had dual Litton LTN-72R INS units installed. As RNP required radio update for these units, the relevant hardware was installed. It tested fine on the ground, but provided NO radio update function in flight . Once again, AAI maintenance could not make the system work, in spite of repeated write-ups.
In light of the above, I am not at all surprised that correct data bases are allegedly not supplied to 767 aircraft, as reported in a previous post. Maybe the UK CAA needs to take another look.