Supplemental Type Certificates

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Additive Manufacturing

Is it envisaged an EASA generic CRI to deal with this new technology?

Does EASA has a Group/Team who we can work to develop the processes to qualify additive manufacturing parts.

Isn’t there a difference between monolithic materials Vs sandwiched Composite materials?

Do you consider Rapid Prototyping as Additive Manufacturing?

Regarding EASA/FAA TIP rev 6: Is additive manufacturing still considered „new technology“?


ADS-B out: there are rumours saying ADS-B Out mandate could be postponed to 2025?

How can we identify the ops capability of the installed systems so that the operator can get the OPS SPEC amended with the capability? Identify RNP or PBN Doc.?

Is there an operational requirement which mandates Design Organisations to communicate the Performed Based Navigation (PBN) needs as well as all xxx.IDE technical requirements to the CAMO?

Cabin Safety

Cabin safety: Where can we find samples of STC for zero-passenger cabin layouts?

When do you plan to release CSXXX for smoke propagation and smoke penetration?

Covers replacement in 16g seats: is it required to perform certification tests to demonstrate compliance with 25.562?

Certification Processes

How to keep contact with EASA approved Production Organisations? What is expected from DOA on top of providing mail address and establishing a DO/PO agreement?

What are the EASA minimum prerequisites for DOAs to process and approve minor design changes?

Where can we find proper Form20 (Permit to Fly) and Form18 (Flight Conditions) templates?

When a Type Certificate holder refuses to share the pre mod approval data and we own the design & certification data, could we apply for an EASA STC once the aircraft is with operator?

What can EASA do to improve consistency of STC timescales? - In my experience some have been very good but some appalling.

STC configuration management practical approach: how to ensure a high level of customization maintaining an acceptable configuration control? Additional topic: impact on MMEL Suppl.

Is EASA Policy for changes embedded in Non-EASA approved design applicable to minor changes? Example : Covers change of TSO C39 seats already installed by STC FAA.

Does the fact that general aviation and small CS25 aircraft are dealth with in one department induce any change to applicable regulations?

To perform a Design it is needed to check the related Certification Specifications, Special conditions, Equivalent Safety Finding, deviations, annex to TCDS, any other document?

For questions outside of an STC project, does EASA have a preferred way for applicants to approach EASA experts?

Is there any method to open an STC application on a product not certified yet such as the A319 ACJ Neo?

Is it be possible to contact department coordinators directly for clarifications?

Will assigned PCM for the STC project stay in charge up to 5 years?

Rotation of PCMs: whilst understandable, how will EASA ensure that past agreements are not subject to renegotiation due to alternative view of the new PCM?

Can you confirm that Panel's expert Statements of Satisfaction are submitted to DOA Team Leaders routinely; as I've not had this feedback from my DOATL (based in UK @ CAA Gatwick)?

Can we get feed back of DOA performance per project directly afterwards rather than waiting for it during an audit where the context is lost?

In my point of view, the important in the DOA dashboard is not to have a good or a bad notation, but to know why it is not 100%. It is important to progress.

Is it also planned to have technical experts joining the audits with the DOA Team Leader to have more insight into the industry? We have good experiences with that.


If a piece of equipment similar to the G5 “Garmin electronic flight instrument ” is requested to be installed, how should the approval process be initiated?

Question for the individual counselling event: My US colleagues have a FAA STC validated by EASA. Can I use a minor mod to extend the applicability?

Part 21 classification: Is the replacement of each Commercial Off-The-Shelf (COTS) equipment currently at least a minor change?

The Rotorcraft Frequently Asked Questions (FAQ) Table has been subject to frequent revisions, the General Aviation FAQ table has not been updated since 2013, are there any plans to update?


Is it possibile to set up a dedicated EASA website for STC (news, goodpractices, questions & answers...)?

Is the STC Coordinator available for STC validations?

Is there a list of attendees available for this conference? It would be very useful for networking if this was placed in the EASA welcome packs on the desks.

Will EASA consider to publish all the asked question during the STC workshops in a booklet?

Please provide better access to „non-published“ Certification Review Items (CRI).

Continued Airworthiness

The Continuing Airworthiness Management Organisation (CAMO) has to evaluate the cumulative effect of many modifications. Does the DOA have to, therefore, provide the CAMO with Safety Assessment data?

When did the community get information about the reported Continued Airworthiness occurrences recorded in the IORS tool? Without a summary of the reports, we will not have any positive impact to our design.

If an STC holder determines that its modification does not affect FCBS (or create new FCS), there is no action per your presentation. Is there any data that is needed to be presented to EASA to obtain EASA's approval for the no action determination?


If the change to STC is Basic and does not require a change by the Certification Authority to STC, how does the operator/CAMO know the change is directly accepted?

Can a US manufacturing organisation use an EASA minor change as the means to apply to the FAA for a 'Request for Conformity'& permit release of parts on a 8130-3?

Are there FAA fees to pay for STC validation?

EASA/FAA Bilateral agreement Technical Implementation Procedures: Does EASA and FAA intend to improve the required 15 working days just for issuance of the approval which in worst case keeps the prototype aircraft on ground?

EASA/FAA Bilateral agreement Technical Implementation Procedures:The 15 days as timeline for the streamlined validation is far beyond reality! Is your statement based on own experience? The same question for Non-Basic validations with the 90 days timeline.

EASA/FAA Bilateral agreement Technical Implementation Procedures: About the Validation Authority process, should the demonstration of FAA compliance (CS/FAR) be systematically provided by the applicant ? or not needed because checked by EASA?

Are minor changes automatically accepted by both authorities (EASA and FAA) independently if they were designed by Designated Engineering Representative (US DER) or EASA Approved Design Organisations (DOA), independently from the registry of the aircraft?

Are minor repairs treated as the same as minor changes between FAA and EASA?

It seems that EASA PCMs prefer to close EASA type investigation before the involving of FAA for validation purpose.

Can an EASA Design Organization use Designated Engineering Representative (DER) approved minor changes with no EASA involvement?

One of our customers is not accepting an EASA minor change to FAA STC on an Airbus Aircraft. They need the FAA STC to be validated by EASA first. What’s your opinion?

Can any EASA Approved Design Organisation (DOA) apply for validation of FAA STC or should that facility be in the scope of approval of the DOA?

Electrical systems

Does the change to the installation of wireless chargers for smartphones require separate STC?

Emergency evacuations

Regarding emergency evacuation, do you think safe and normal the policy of low cost company that separates wife and husband or family and kids older than 12?

If experience shows that passengers are evacuating with carry-on items, why not creating a requirement to implement an auto-lock of the overhead storage?

International cooperation

Regarding EASA/FAA TIP rev 6: classifying a change as major or minor. Whose classification is this - the Certifying Authority or the Validating Authority, since the classification procedures differ?

Lithium Batteries

What is the EASA position on Lithium batteries installed as "loose parts"? For example Lithium batteries installed in portable In-Flight Entertainment systems (with multiple cells <100Wh) ?

Can an electric wheelchair in the cabin be treated as a Portable Electronic Devices (PED)? If not how could the battery system be managed to ensure safety during flight?

Lithium Battery: How many cases where investigated to conclude that the traditional practices were inefficient? No Airworthiness Directive known to correct interference issue on in service aircraft. (ref. to Electrical System updates presentation)

Lithium Battery: When is CS-25 be expected to be updated to reflect different types of energy storage devices (Lithium technology, Fuel Cells etc.)?

Minimum Operational Performance Standards for non-rechargeable Lithium Batteries: DO-227 and other referenced standards are applicable to permanently installed equipment. Is there any mandatory requirement for “carry-on” medical equipment?

Lithium Batteries: How many incidents with Lithium Batteries have been recognised in the past year. Are Lithium Batteries still dangerous?

Lithium Battery: Will EASA mandate actions against existing designs?

How do we control the Lithium batteries in all smart phones and other devices?

is EASA having in service occurences linked to Lithium batteries installed within Cockpit Voice Recorder and Flight Data Recorders current 30 days Underwater Locator Device (ULD) ?

Will EASA issue an Airworthiness Directive to replace all Emergency Locator Transmitters and Underwater Locator Devices currently installed, if TSO/ ETSO standards are not acceptable to EASA?

It is good that the DO community is made aware about the Lithium Battery Special Conditions. Design Organisations not aware of those might wrongly classify the design changes including a Lithium battery.

Lithium battery: Is there any generic Certification Review Item issued?

Why does the current Special Conditions CRI for non rechargeable batteries not explicitly state that it would be applicable to Batteries which were qualified to the ETSO C142 Standard?

Lithium batteries (Non-rechargeable)

I plan to install a non-rechargeable Lithium battery (NRLB) with capacity under 2 Wh. How should I classify my project?

I plan to relocate an equipment powered by a non-rechargeable lithium battery (NRLB) but the pre-mod configuration was designed by another design organization. Under which conditions am I allowed to classify the design change as minor?

What is the intent of Note 2 included in the non-rechargeable Lithium batteries (NRLBs) Special Condition’s published the 7th of April 2021 in EASA website?

When a non-rechargeable lithium battery (NRLB) project is classified as major, how is EASA going to establish the level of involvement (LOI) in the certification project?

If I have a non-rechargeable lithium battery (NRLB) specific case not fitting to the 4 cases where a direct minor classification is allowed, and I consider that severity of a thermal runaway failure can be considered less than hazardous, can I ask to EASA to re-classify one specific project?

Does EASA consider the installation of an equipment powered by a non-rechargeable lithium battery (NRLB) with an ETSO authorization compliant with the special conditions without further evaluation?

How should I classify a change when my non-rechargeable lithium batteries (NRLBs) installation does not fit any of the 4 cases applicable as minor change under DOA privileges?

Which are the 4 cases involving non-rechargeable lithium batteries (NRLBs) agreed by EASA to be classified as minor change under DOA privileges?

Is the previous approach for minor/major classification presented in STC workshop 2019 still valid for non-rechargeable lithium batteries (NRLBs)?

What is the EASA approach for non-rechargeable lithium batteries (NRLB) installation on aircraft types other than CS-25?

Has EASA released Special Conditions on non-rechargeable lithium batteries (NRLBs) installation for all CS-25 aircraft types?

Is there a flowchart helping on the minor/major classification of projects involving non-rechargeable lithium batteries (NRLB)?

What is EASA’s mid term plan on Non-rechargeable Lithium batteries (NRLB) regarding qualification and Means of compliance (MoC) with the Non-rechargeable lithium batteries Special Conditions?

Operational Suitability Data

Can a "Nice to have" Operational Suitability Data change be classified as Major ? If yes, do you have an example ?

How should an STC holder handle TC holder (TCH) MMEL rework to remove TGL26 "As required by regulation" impacting the CS-MMEL?

Cabin Crew Data (CCD) related to VIP interior (such as Boeing Business Jet): is EASA expectation that it would be a VARIANT? It seems logical however the Aircraft Difference Table (ADT) questions would lean towards NEW TYPE.

Oxygen systems

When is it scheduled to have a Certification Memo replacing the CRI for oxygen systems?

Part 21

How will the Agency notify the acceptance of the certification basis?

Is there a maximum timeframe considered for EASA to accept a Certification Program and further for the acceptance or adjustment to the Level Of Involvement proposed by the DOA?

Is it not possible to consider the number of Compliance Demonstration Items (CDIs) as a criterion before starting with Level Of Involvement . For instance projects with less than twenty CDIs. Should the CDI list be defined and sent to EASA?

How will the privilege of submitting compliance documents without further involvement be modified by the Level Of Involvement process?

Regarding the tests, is it possible to submit only the plans and have the report validated by the Compliance Verification Engineer without EASA checking if all the tests are "passed"?

The Level Of Involvement risk analysis is a transfer of the Agency workload. Could applicants expect to have a reduction of the STC fees in the future ?

Has the Level Of Involvement definition for an STC a direct impact on the STC fees?

Is the overall DOA performance indicator based on feedback of DOA Teamleader and Product Certification Manager? Panel feedback per panel, or on average?

What is the minimum amount of 'DOA Holder Performance' to not be always at the bottom of the scale in the matrix?

Do we have to document the justification of the Level Of Involvement selection and submit it with the Certification Program to EASA as a supporting document?

The aircraft manufacturers do not take into consideration customized configurations when issuing documentation (such as Service Bulletin). What is EASA policy in order to cope with this issue?

What is the validity of a Non Technical Objection (NTO) statement from Airworthiness point of view?

Part 21: Will be a dedicated qualification needed to perform the risk assessment associated to the Level of Involvement proposal?

What is the expected benefit when the new Level Of Involvement concept is implemented in Part 21 and a low to very low involvement of EASA is agreed on a project?

Part 26

Does Part 26 apply also to Non Commercial Carrier operators? (ref. to AIR OPS regulation)


How did you install a Commercial Off-The-Shelf (COTS) equipment without EASA form-1? How do you arrange Part-145 side actually?


For applicants, it is difficult to see which documents have been uploaded, reviewed or validated by the Product Certification Manager or EASA panel experts. Sepiac is a good idea but needs improvements

Who is responsible for closing the project in SEPIAC?

Please can you advise where and when DOA training on SEPIAC will be held?

Sepiac is not used or misused by a lot of EASA PCM and experts. Today we have to use both Sepiac and e-mail. It is really inefficient and time consuming!

What is the intention of EASA regarding the communication channel to be used in the framework of certification projects? Shall all the communication be done via Sepiac? Or will Sepiac and e-mail be there?

Is Sepiac not in effect now for the STC management?


Structures requirement: cabin loading for occupant safety. Type Certificate Holder specification remain acceptable for demonstration of compliance, however these spec ifications are not made available by EASA?

Are Cabin Loads applicable for cockpit installations as well?