B777
Turkish Airlines has the approval for this approach , the aircraft and the crew were certified and they had the necessary sim training for this app to ktm
As a matter of interest, does the A330 give adequate error warnings for this type of approach? Our more steam-driven type does not adequately inform you if it has not gone to RNP 0.3 mode; it gives little warning of deviating from lateral track; and gives no gives warnings for deviating from vertical track (just the path indicators). At least the ILS will shout 'glideslope' at you.
In a similar fashion, our steam-driven FMC gives very little indication that it has lost GPS signal, or is getting GPS ghosting from mountains etc: Our current FMC manual gives no error messages for RAIM monitoring of the GPS. Some warnings may be in the box, for all I know, but they are not in the current manual. And I have seen no method of verifying "RAIM OK" before making an approach. And since there is no WAAS in Turkey (and most of Europe), you are entirely reliant on RAIM checking the satellites correctly - especially in somewhere like KTM or Turkey where signal ghosting from high ground may be problematic.
This is why our outfit is not certified for GNS approaches, and why crews should not be doing
ad-hoc GNS approaches just because they are in the database. Someone said earlier that we should stop blaming crews? Who is blaming the crew? The problem is that various CAAs have started leaking out GNS approaches without informing anyone as to the requirements. And many companies have been slow to act with clear policies and instructions.