to finalize the subject here is the reference from FLIGHT PROCEDURES (DOC 8168) - GENERAL PRINCIPLES Extracted from ICAO Document 8168, Volume I - Fifth Edition — Flight Procedures, PROCEDURES FOR AIR NAVIGATION SERVICES — AIRCRAFT OPERATIONS, herein known as PANS-OPS.
USE OF FLIGHT MANAGEMENT SYSTEM (FMS)/AREA NAVIGATION (RNAV) EQUIPMENT Where FMS/RNAV equipment is available, it may be used to fly conventional procedures provided:
a. the procedure is monitored using the basic display normally associated with that procedure; and
b. the tolerances for flight using raw data on the basic display are complied with.
The conclusive answer is obvious.
