Published date: 2 September 2016


This Advisory Circular (AC) describes an acceptable means of compliance with Part 21 in order to gain a supplemental type certificate (STC).

The guidelines provided in this AC are general in nature and intended to help applicants and design organisations gain a better understanding of the STC process including their respective roles and responsibilities.

Related rules

This AC relates specifically to Civil Aviation Rule Part 21 Subpart E – Supplemental Type Certificates.

Change notice

Revision 1 updates and expands on the existing guidance. The CAA now requires new STCs to be supplemental to aircraft type accepted or certificated in New Zealand. The PSCP (project specific certificate plan) template now includes a sample compliance checklist and is moved to a separate AC appendix (AC21-8 Appendix A [PDF 262 KB]).