There is nothing in any Boeing or Airbus manual I've ever seen that says you must meet an RNP criteria for conventional navaid based approaches, nor is there a regulatory requirement. And there's a very good reason for that. The two have absolutely nothing to do with each other.
Only if you are conducting an RNAV procedure (SID, STAR or Approach) are you required to comply with the RNP value for that procedure. Non-RNAV procedures have no RNP value to maintain because the procedure is done in reference to a navaid.
The two are mutually exclusive.
One is done with reference to the navaid only. And the other is done referencing the RNAV capability of the aircraft independent of ground based navigation aids.
Apple and oranges.
"The concept using raw data as the primary source is not normal in airline transport operations."
Are you suggesting airline transport operators never conduct ILS, VOR or NDB approaches then? Because raw data on all of those procedures is the primary source?
Last edited by engfireleft; 20th Jan 2011 at 23:35.