Which EASA rule points specify the requirements for necessary changes to operational suitability data when approving minor or major changes to a type certificate?

The requirements are specified in points 21.B.107(c) for minor changes and 21.B.111(c) for major changes, as applicable to necessary changes to the OSD foreseen by 21.A.95(b) Section 2 for minor changes and 21.A.97(b) Section 2 for major changes.

Which sections of 21.A.95, 21.A.97, and 21.A.115 are referenced for necessary changes to OSD in minor changes, major changes, and STCs respectively?

For minor changes, 21.A.95(b) Section 2; for major changes, 21.A.97(b) Section 2; and for STCs, 21.A.115(b) Section 3.

GM 21.B.107 and 21.B.111 Operational suitability data (OSD) considerations for the approval of changes to type certificates (TCs) or supplemental type certificates (STCs)

Q: What are the OSD considerations for approving changes to type certificates or supplemental type certificates under EASA rules?

The OSD considerations for approving changes to TCs or STCs are that the requirements in points 21.B.107(c) or 21.B.111(c) apply to necessary changes to the OSD as foreseen by 21.A.95(b) Section 2 for minor changes, 21.A.97(b) Section 2 for major changes, and 21.A.115(b) Section 3 for STCs. By analogy, these requirements should also be considered by design organisation approval (DOA) holders that approve changes or issue STCs under their privileges without EASA's involvement.

Q: Do DOA holders need to follow the same OSD requirements as EASA when approving changes or issuing STCs under their privileges?

Yes, by analogy, the requirements in points 21.B.107(c) or 21.B.111(c) should also be considered by design organisation approval (DOA) holders that approve changes or issue supplemental type certificates (STCs) under their privileges without EASA's involvement, as stated in the GM to A.21.A.90A.

Q: What is an example of a change to a TC that triggers a necessary change to the OSD?

A change to the cockpit design may trigger a necessary change to the flight crew data, which is part of the OSD, and is therefore included in the TC.

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GM 21.B.107 and 21.B.111 Operational suitability data (OSD) considerations for the approval of changes to type certificates (TCs) or supplemental type certificates (STCs)

ED Decision 2019/018/R

The requirement for EASA in points 21.B.107(c) or 21.B.111(c) are applicable to necessary changes to the OSD as foreseen by 21.A.95(b) Section 2 for minor changes, 21.A.97(b) Section 2 for major changes, and 21.A.115(b) Section 3 for STCs. By analogy, these requirements should also be considered by design organisation approval (DOA) holders that approve changes or issue supplemental type certificates (STCs) under their privileges (without EASA’s involvement), as stated in the GM to A.21.A.90A.

Changes to TCs can comprise several interrelated changes to the TC. For example, a change to the cockpit design may trigger a necessary change to the flight crew data, which is part of the OSD, and is, therefore, included in the TC.

Interrelated changes (e.g. type design changes and necessary changes to the MMEL and/or flight crew data) should be approved together under a single approval.

Details

Source-Title: GM 21.B.107 and 21.B.111 Operational suitability data (OSD) considerations for the approval of changes to type certificates (TCs) or supplemental type certificates (STCs) View latest amendments

Erulesid: ERULES-1963177438-4241 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