Certification Authorities for Propulsion Products (CAPP)
The Certification Authorities for Propulsion Products (CAPP) comprises aircraft certification management representatives from ANAC (Brazil), EASA (EU), FAA (United States), and TCCA (Canada). The CAPP is tasked to identify and pursue, through collaborative activity, certification policy and guidance harmonization opportunities. The full CAPP Charter has been established by the certification director-level Certification Management Team (CMT).
For further information, please contact the FAA CAPP management representative:
Robert Ganley, AIR-62A, Robert.Ganley@faa.gov
CAPP Harmonization Decisions
CAPP harmonization decisions are documented in closed CAPP Worklist Item (CWI) forms, signed by the CAPP principals from all four authorities. CAPP closure decisions vary depending on the nature of the issue.
Most CAPP CWI forms document an agreed compliance methodology for the subject certification issue. If an applicant follows the documented methodology, and their certificating authority endorses that methodology for a certification project, the other three CMT authorities will accept the methodology for validation. The objective is to offer to industry harmonized compliance approaches, which if adopted, will streamline the validation process. Typically, the subjects addressed in CAPP decision documents are those that have required significant authority and industry resource expenditure to resolve in multiple projects.
CAPP Worklist Item (CWI) Decision Documents
| CAPP Reference | Subject | Closure Date |
|---|---|---|
| Icing CWI-3 | Novelty of Icing Critical Points Analysis | 09/01/2023 |
| Icing CWI-5 | Icing Novelty of ICI Rule | 09/13/2023 |
CAPP Decision Document Use
As noted previously, if an applicant proposes to adopt the compliance methodology documented in a CAPP decision document, and their certificating authority endorses that methodology for a project, the other three CMT authorities will accept the methodology for validation.
As with any policy, if a CAPP member-authority becomes aware of circumstances that make it apparent that following the documented approach would not result in compliance with the member-authority's applicable airworthiness standards, then the terms of the CAPP document are non-binding and the member-authority may require additional substantiation or design changes as a basis for determining compliance. Compliance approaches described in CAPP decision documents are also non-binding for applicants. Applicants are free to propose alternative approaches.
CAPP decision documents do not describe the means each member-authority will use to apply them to a project. Each authority will utilize their own system to manage project use of these documents. The FAA issued memorandum AIR600-21-630-DM10, dated June 16, 2021, to address use of CAPP decision documents in the FAA system. This memorandum superseded memorandum AIR600-18-6C0-DM106, Revision 2, dated July 7, 2020. This memorandum permits reference to a CAPP decision document in lieu of an issue paper for documenting a means of compliance. This approved deviation to FAA Order 8110.112 applies to both domestic certification and import validation projects.