2.1.1 Compliance with the Standards prescribed in
Chapter 2 shall be established by flight or other tests con-
ducted upon a helicopter or helicopters of the type for which
a Certificate of Airworthiness is sought, or by calculations (or
other methods) based on such tests, provided that the results
obtained by calculations (or other methods) are equal in
accuracy to, or conservatively represent, the results of direct
testing.