Which EASA Part 21 points require applicants for a major change to a TC or an STC to apply point 21.A.20 as applicable to the change?

Points 21.A.97(b)(3) and 21.A.115(b)(4) require applicants for a major change to a TC (or an STC) to apply point 21.A.20 as applicable to the change.

When a DOA holder approves a major change under the privilege of point 21.A.263(c)(8), what must be kept on record and submitted to EASA only upon request?

The means by which compliance has been demonstrated (see point 21.A.20(a)) and the final declaration of compliance (see point 21.A.20(e)) must be kept on record and submitted to EASA only if EASA requests them during its DOA continued surveillance process.

For a DOA holder approving an STC under point 21.A.263(c)(9), how should the certification programme compare to the one accepted by EASA?

The certification programme, including the certification basis and detailed means of compliance, should be almost identical to the one accepted by EASA for an STC when approved for the scope of the privilege; it may differ in some aspects (e.g., detailed description of changes) but must remain in the frame of the corresponding justification document.

Which EASA decision and point does GM 21.A.20 provide guidance for?

GM 21.A.20 provides guidance for point 21.A.20, and it is associated with ED Decision 2019/018/R.

In the case of a DOA holder approving a major change under privilege, why is there no application and no EASA involvement?

In the case of a DOA holder approving a major change under privilege per point 21.A.263(c)(8) or (9), there is no application and no EASA involvement because the approval is done under the DOA holder's privilege.

GM 21.A.20 Compliance demonstration process

Q: For a major change to a TC, what does 'as applicable to the change' mean regarding the certification programme?

For a major change to a TC, 'as applicable to the change' means the certification programme to be followed is the one prepared for the major change in accordance with point 21.A.93, as accepted by EASA.

Q: For an STC, which certification basis must be used when applying point 21.A.20 as applicable to the change?

For an STC, the certification basis (consisting of the type-certification basis, OSD certification basis, and environmental protection requirements) is the one established by EASA in accordance with point 21.A.101 and notified to the applicant in accordance with point 21.B.109.

Q: Does point 21.A.20 apply to restricted type certificates (RTC)?

Yes, point 21.A.20 applies to the compliance demonstration process for a type certificate (TC) or a restricted type certificate (RTC).

Q: For a major change to a TC, which point establishes the certification basis that EASA notifies to the applicant?

For a major change to a TC, the certification basis is established by EASA in accordance with point 21.A.101 and notified to the applicant in accordance with point 21.B.105.

Q: What are the three components of the certification basis for a major change or STC as per point 21.A.101?

The certification basis consists of the type-certification basis, operational suitability data (OSD) certification basis, and the environmental protection requirements.

Navigate / EASA

Ask question Discover more Add to collection

GM 21.A.20 Compliance demonstration process

ED Decision 2019/018/R

Point 21.A.20 applies to the compliance demonstration process for a type certificate (TC) (or a restricted type certificate (RTC)) and, by cross references to Part 21 Subpart D and E, to compliance demonstration processes for major changes to a TC (see point 21.A.97(b)(3)) and an STC (see point 21.A.115(b)(4)).

Applicants for a TC (or an RTC) should apply point 21.A.20 in full. Applicants for a major change to a TC (or an STC) are required (see points 21.A.97(b)(3) and 21.A.115(b)(4)) to apply point 21.A.20 as applicable to the change.

‘As applicable to the change’ means that:

— the certification programme to be followed is the one prepared for the major change or STC in accordance with point 21.A.93, as accepted by EASA; and

— the certification basis (consisting of the type-certification basis, operational suitability data (OSD) certification basis, and the environmental protection requirements) is the one established by EASA in accordance with point 21.A.101 and notified to the applicant in accordance with point 21.B.105 (for a major change to a TC) or point 21.B.109 (for an STC).

Point 21.A.20 also applies to major changes to a TC or an STC approved by design organisation approval (DOA) holders under their privilege as per point 21.A.263(c)(8) or (9) (see also points 21.A.97(b)(3) and 21.A.115(b)(4)). As in this case there is no application and no EASA involvement, point 21.A.20 should be applied with the following adaptions:

— the certification programme to be followed, including the certification basis and the detailed means of compliance, should be almost identical to the one accepted by EASA for a major change or an STC when approved for the scope of the privilege as per point 21.A.263(c)(8) or (9); it may differ in some aspects (e.g. the detailed description of the changes), but it should be shown to remain in the frame of the corresponding justification document; and

— the means by which such compliance has been demonstrated (see point 21.A.20(a)) and the final declaration of compliance (see point 21.A.20(e)) should be kept on record and submitted to EASA only if EASA requests them during its DOA continued surveillance process.

Details

Source-Title: GM 21.A.20 Compliance demonstration process View latest amendments

Erulesid: ERULES-1963177438-15138 Compare versions

Domain: Initial airworthiness

Applicabilitydate: 30 August, 2019

Entryintoforcedate: 30 August, 2019

Regulatorysource: ED Decision 2019/018/R Navigate

Regulatorysubject: Part-21

Typeofcontent: GM to IR (Guidance material to implementing rule)

Origin: EASA

Category: EAR