Many of our members have been communicating with us about their concerns over the proposed Materials AC. We had previously asked the PMA community to send us their comments and concerns so we could assemble them into a single missive to deliver to the FAA.
We’ve heard from a number of you that the large volume of material and the highly technical nature of the proposed AC has made it slow going to put together your comments. With this in mind, MARPA asked the FAA last week for a extension of time to file comments on this draft.
We received the answer today, granting that extension.
Dear Mr. Ryan Aggergaard,
This e-mail is in response to your request to grant a 90 day extension to comment on the FAA public draft Advisory Circular 33.15-3, titled “Parts Manufacturer Approval (PMA) Metallic Part Material Compliance Using Comparative Test and Analysis Method for Turbine Engines or Auxiliary Power Units”.
The FAA will consider comments after the comment period has closed if it is possible to do so without incurring expense or delay.
We have determined there will be no incurring expense or delay, and will grant the MARPA members and the MARPA Technical Committee an extension from July 20, 2016, to October 18, 2016.
Please feel free to contact us if you have any questions or concerns.
Please do not wait until October to review this AC and develop your comments. The earlier you can provide your comments and concerns to the FAA (and to MARPA), the better able we will be to address them in a positive and productive way with the FAA.
MARPA had the opportunity this week to attend the 2016 FAA-EASA International Aviation Safety Conference that was held in Washington, DC. The conference provides an opportunity for the regulatory agencies and industry to get together to discuss emerging issues in aviation safety and strengthen the cooperation between both the regulators themselves as well as the regulators and industry.
One notable panel discussed performance-based regulations (PBR) and their development, implementation and oversight as a part of the ongoing safety management adoption. The goal of PBR is essentially to retain the high level requirements and clearly establish what those high-level regulations are trying to achieve, while clearing out more detailed prescriptive regulations. Those detailed regulations would then be replaced by industry consensus standards.
In theory, this should clear the way for innovation by focusing more on ensuring a satisfactory outcome (that complies with the regulations) is the result, rather than focusing on prescriptive compliance-based rules. (How this exactly squares with a safety management system focused on systems and processes rather than the outcome per se is a conversation for another day.) Performance-based regulations can free the hands of regulated parties and avoid the trap of innovation stagnation in which companies are forced to design or produce in only limited ways in order to comply with the regulations.
Although moving to a PBR approach may be a laudable goal, the next panel demonstrated how challenging it may be for regulators to break free of deeply ingrained compliance-based approaches to oversight. Relevant to PMA manufacturers, the “fast-moving technologies” panel spent a significant amount of time discussing certification of projects using additive manufacturing techniques.
In theory, a PBR approach would be ideal for approving parts manufactured using emerging technology like additive manufacturing (AM). If a part can be produced using AM techniques (like 3D printing) that meets all the design requirements (dimensions, material composition, durability, etc) of a part that is traditionally machined, an outcome-focused approach like PBR claims to be should have no problem approving that part. Conversely, if a 3D printed part cannot be made to conform to the approved design, our quality assurance systems reject the part and we go back to the drawing board.
However, it became clear during that panel that we can expect to see more of the same compliance based review of processes in seeking to obtain approval of parts manufactured using emerging technologies like AM. Of course to borrow from Captain Renault I was shocked, SHOCKED to find that the OEM panelist expressed skepticism that “sub-tier” suppliers or those in the aftermarket were capable of producing approved parts using these methods. But of greater concern was his statement that the regulators might also question that ability.
Part of this concern on the part of the regulators arises from the fact that the regulators themselves do not fully understand technologies like AM yet. The FAA is currently working with industry to determine what controls will need to be in place and what the oversight requirements will be with respect to AM. It will therefore be very important for any PMA manufacturer seeking to use new techniques to manufacture parts to engage the FAA early in the process and demonstrate to the FAA its competence with the technique. This may involve educating the FAA in some cases (and refuting the implications of some larger OEMs that only they know the “special sauce” of new technology).
This much was supported by FAA AIR-1 Dorenda Baker, when she explained that the key to getting approval when relying on new technology is ensuring an understanding on both sides. The FAA needs to be brought into the process very early on. When the FAA is brought in at the last minute, problems and confusion can arise, because what might seem clear to the applicant, who has been working with the technology for months or even years, can seem confusing to the regulator seeing it in action for the first time. Ms. Baker explained that we don’t want questions being asked for the first time, or engineers trying to understand new processes, at the time of certification. We, as applicants relying on new manufacturing techniques, need to engage the FAA early and often.
Of course this is somewhat inconsistent with a performance-based approach. As we mentioned above, if the goal of PBR is to ensure an outcome that satisfies high-level regulations, it should be less important how we get to the result than that we obtain a satisfactory result. A need on behalf of the regulator to understand fully the processes by which we obtain the result is more consistent with systems oversight (their stated goal) but doesn’t square perfectly with a PBR approach.
Nonetheless, it thus becomes clear that the PMA industry will have to fight this battle of fast moving technology on two fronts: First, we will have to (again) battle against an OEM-driven (mis)perception that only OEMs are capable of understanding and safely applying emerging technologies like additive manufacturing. Second, we will have to work very closely with the regulators to continuously demonstrate our competence and expertise in applying these technologies, and in effectively implementing systems that consistently produce the desired outcome.
There is a lot happening right now; from fundamental shifts in the role regulators play to the way we design and manufacture parts. By frequently engaging with the regulators we are able demonstrate our competence and abilities (simultaneously refuting any implications by competitors to the contrary) and keep the regulators closely engaged so that the certification process moves smoothly and we are able to nimbly adapt to changes as they happen.
MARPA will continue to keep you updated as old regulations change and new regulations emerge.
As readers of this blog and attendees at MARPA events know the FAA, specifically the Engine and Propeller Directorate, has been releasing a significant number of PMA-related advisory circulars of late. Currently open for comment is AC 33.15-3 Parts Manufacturer Approval (PMA) Metallic Part Material Compliance Using Comparative Test and Analysis Method for Turbine Engines or Auxiliary Power Units. This is a highly complex draft advisory circular that has the potential to affect many MARPA members and the PMA industry as a whole.
MARPA plans on submitting comments on this advisory circular, but we need the assistance and expertise of the MARPA community to make sure we identify all the possible issues that may have an adverse effect on the PMA industry.
I know that some of our members have already looked at this and have begun to identify issues. For those who have not yet had the opportunity, please take the time to review the draft language and identify any issues and possible solutions you see. Please provide any comments you identify to MARPA so that we can include them in our comments that we will submit to the FAA.
The AC is fairly lengthy document, so it may take some time to get through. Because of this complexity, we would like to have all of your comments in well in advance of the July 20, 2016 comment due date. MARPA therefore requests that any comments you identify are provided to us as quickly as possible, and in any case no later than July 8. This should give us ample time to compile all of your comments into a single comment submission on behalf of the members. It will also give us time to circulate our comments back to both the MARPA Technical Committee and MARPA Board for review.
This is a complex and weighty document, so if you plan on reviewing and submitting comments to MARPA or submitting comments on behalf of your company, we encourage you not to wait until the last minute to review the draft AC.
Please email your comments to VP of Government and Industry Affairs Ryan Aggergaard at firstname.lastname@example.org.
GECAS’ Gilberto Peralta turned some heads at CCMA yesterday when he said that he sees no safety or technical issues with PMAs. He explained that his only objections to PMAs are commercial.
Peralta is the GECAS General Manager for Latin America and the Caribbean. ALTA representatives confirmed that GECAS is the most significant leasing company in South America. Peralta was part of the CCMA panel discussing the technical and commercial aspects of PMA parts.
He explained that GECAS’ standard lease agreement excludes PMAs, and therefore he expects that the lease terms will control the use of PMAs. He explained that the reason for this term is because of a fear that air carriers will not accept a leased aircraft with installed PMAs. Several operators in the audience suggested that their only impediment to accepting PMAs is the anti-PMA lease terms. David Linebaugh of Delta, who was also part of the same panel, suggested that this is a chicken-and-the-egg situation, in which operators and lessors blame one another for erecting walls against PMA when they really all just need to get out of the way of progress.
The audience asked Peralta whether GECAS would accept use of PMAs during the term of the lease if those PMA parts were removed and replaced in pars manufacture under a production certificate (“OEM” parts). Peralta explained “I don’t know what you do with the the aircraft during the lease term,” and expressed that his concern was only with the condition of the aircraft at the time of return. He added that he would expect the lessee to take responsibility for such PMA part failures. Mike Garcia of HEICO, who was also part of the panel, explained that HEICO offers a generous warranty to support its parts (so operator liability should not be an issue); but he also noted that HEICO has never experienced an airworthiness directive or service bulletin on any of its articles.
FAA Deputy Associate Administrator John Hickey was also on hand as part of the same panel. He noted that the FAA has issued a very small number of airworthiness directives against PMA parts, but that the FAA issues “two hundred, three hundred, even four hundred ADs per year” against PC holders products and articles. He noted that the PMA community has an excellent safety record, and that the FAA has rigorous design approval and production approval processes intended to ensure that FAA approved designs – and the parts created under them – remain compliant with the FAA’s regulatory safety standards.
Several draft FAA Advisory Circulars are currently open for comment of which MARPA members should take note.
Today the FAA’s Engine and Propeller Directorate released draft AC 33.15-3 Parts Manufacturer Approval (PMA) Metallic Part Material Compliance Using Comparative Test and Analysis Method for Turbine Engines or Auxiliary Power Units. This AC is intended to provide guidance to assist PMA applicants in developing tests to demonstrate the equivalence of materials with that of the type design materials.
We will provide a more detailed analysis of this draft AC in the coming days, but want to encourage each of our members to review it and submit comments to the FAA addressing any potential problems you identify–or offering praise if you feel it is a useful document. MARPA will be offering its own comments, so if you do not wish to file on your own, please feel free to provide us with your thoughts and we will incorporate them into the association’s comments. These comments are due to the FAA by July 20.
Two other draft ACs are also open for comment and bear review. The first is AC 39-xx Alternative Methods of Compliance. This AC is intended to provide guidance to those applicants seeking approval of an AMOC. This guidance formerly appeared in FAA Order 8110.103A but has since been removed to a stand-alone AC. Comments are due May 30.
The other is AC 23.10 FAA Accepted Means of Compliance Process for 14 CFR Part 23. This AC provides guidance on how to submit applicant proposed means of compliance to the FAA for acceptance by the Administrator in accordance with proposed § 23.10 (which is one section of the current Part 23 proposed rule revision). Comments are due May 13.
Each of these proposed Advisory Circulars should be reviewed for potential effects on the PMA industry. MARPA will be undertaking its own reviews, but we encourage each of our members to do the same, and file such comments as they believe helpful. All draft materials and FAA contact information can be found at https://www.faa.gov/aircraft/draft_docs/ac/.
If you would like us to incorporate your comments, you should email them to VP of Government and Industry Affairs Ryan Aggergaard at email@example.com
The FAA has released a Draft Policy Statement related to Order 8110.42D that is directly applicable to the PMA community. PS-AIR-21-1601 – FAA Order 8110.42D, Parts Manufacturer Approval Procedures – Use of Parts Manufacturer Approvals (PMA) for Minor Modifications to Products establishes FAA policy for “the gray area when a modification to a product does not rise to the level of a major change . . . and the producer of the modification article wishes to sell it in accordance with 14 CFR 21.9.”
The Draft Policy explains that historically there was not a consistent policy for issuing PMAs when the PMA made a modification that did not rise to the level of a major change under the regulations. Confusion existed as to whether a STC was appropriate for a modification article that did not constitute a major change to type design.
The Draft Policy clarifies the FAA’s position that:
PMA is a suitable method to approve an article, and provide for that article’s installation, in cases where the installation would not constitute introduction of a major change in a product’s type design.
The policy goes on to explain that the applicant must be able to identify the change resulting from installation of the article and justify it as not being a major change to the product and have the project ACO’s agreement.
On balance this looks like a positive policy for the PMA industry, clarifying modification PMAs that do not constitute a major change to a product’s type design can be approved through the PMA process and not require a STC. However we would still like to hear from our members to determine if there are any unintended consequences of this policy or ways in which the policy can be made more clear.
Comments on this policy statement are due May 1, 2016, so please email Ryan Aggergaard at firstname.lastname@example.org if you have any concerns about this policy or potential effects on the PMA industry.
As we discussed at the MARPA Annual Conference, Part 21 has been amended in some ways that will impact the PMA community.
The amendments can be found in the October 1 Federal Register. There are three main amendments that drive change in a PMA company’s production quality system:
MARPA has drafted compliance guidance that explains what the change are, and provides checklists to aid in compliance with each of the changes that significantly affect the PMA community.
The MARPA compliance guidance will be mailed to MARPA members with the next MARPA Supplement. if you are a MARPA member and do not receive the MARPA Compliance Guide with the November 25 MARPA Supplement, then please contact the Association.
MARPA is in Singapore this week for MRO Asia-Pacific promoting all things PMA. The first day of the MRO conference agenda dedicated substantial discussion (as they usually do) to market forecast and trends. Some of these trends could be an opportunity for PMA manufacturers, but others could mean significant challenges down the road if companies are unable to adapt.
The opening session presented a discussion of trends in supply chain logistics. One of the largest takeaways was the change in inventory management practices, especially in the Asia Pacific region, from a just-in-case model, to a just-in-time (JIT) model. This follows the trend in many other industries, including manufacturing and retail, which enable businesses to reduce costs by carrying less inventory.
PMA manufacturers are in an excellent position to benefit those customers shifting to a JIT model because PMA parts can help customers defray the costs associated with warehousing and inventory management, which is outside of the customers’ core competency. This applies to both operators and MRO facilities. This is because PMAers have the parts on the shelf ready to go, eliminating the need for users to maintain parts inventories themselves to ensure availability.
But the shift to a JIT model also presents certain challenges in Asia Pacific, particularly for AOG situations or other scenarios demanding quick turn times. In certain markets with well-established MRO markets, like Japan and Singapore, getting parts to the customer is often a fairly straight-forward exercise and can be done overnight from the United States. However, in less-developed markets and countries in the region, import and customs requirements can pose significant barriers, meaning delays of several days in clearing the shipment and getting the part to the customer. Those companies able to most efficiently navigate those challenges will be at a competitive advantage.
Another trend in Asia Pacific is the MRO spend focused on the narrow body fleet–namely the 737 and A320 families. The narrow bodies currently account for approximately 70% of the MRO spend in the region (and are the two largest fleets by type). This trend should continue over the next decade for two reasons: (1) a significant number of these aircraft have been delivered over the last decade (and continue to be delivered); and (2) the commonalities that exist between the current gen aircraft and the Max and neo versions of the aircraft.
Finally, an emerging trend that should be of great concern to PMA manufacturers is the shift by component and airframe OEMs toward power-by-the-hour agreements. The PMA industry has already seen the problems that are caused when OEMs use PbH agreements as engine OEMs have taken significant steps to lock up the engine spares market. Although the percentage of PbH agreements in component and airframe is still small, it is growing. PMA manufacturers need to get out in front of this trend and remind their customers that they are a) not obliged to sign such agreements and b) demonstrate the value of PMA in terms of cost, reliability, and customer service offered by PMA. It can also benefit smaller PMA companies to form partnerships with other manufacturers of complimentary product lines to offer greater benefits to customers.
MARPA will work to stay on top of these trends. We welcome any information or questions our members have that can help MARPA continue to craft its strategy.
One of our members recently reported that his company has been offering cabin interior PMA parts to several Chinese airlines, only to be told that they are already using CAAC PMAs for many of these cabin parts. CAAC PMAs are Parts Manufacturer Approvals issued by the Civil Aviation Authority of China. CAAC PMAs are acceptable for installation on Chinese-registered and Hong Kong-registered aircraft but they do not appear to be currently acceptable for installation on any other aircraft.
Our member asked whether there is a master list of CAAC PMA parts that MARPA members could review. This would help MARPA members know which parts have not been PMAed in China which in turn will help to reveal which FAA-PMA parts might be most valuable and useful to Chinese air carriers.
As far as we know, the master list of CAAC PMAs is only maintained as an advisory circular. Because it is an advisory circular, it is not maintained in real time, but rather it is updated annually. This link is to the 2015 revision of the CAAC PMA Catalog.
Hong Kong has a separate aviation authority. Hong Kong’s Civil Aviation Department also issues its own PMAs. Hong Kong has issued PMA authority to Taikoo (Xiamen) Aircraft Engineering Co. Ltd. There is a Schedule of Implementation Procedures between China and Hong Kong under which each accepts the PMAs of the other.
ACCEPTANCE OF CHINESE PMAs
Remember, the current US-China bilateral permits entry of US PMAs into China, but it is currently a one way only: it does not permit installation of Chinese PMAs onto US-registered aircraft. Without an explicit acceptance of CAAC PMAs through a US document (such as the US-Chinese bilateral agreement), CAAC PMAs are not currently eligible for installation on US registered aircraft as replacement or modification parts (under 14 C.F.R. 21.9).
FAA PMA FOR CHINESE MANUFACTURERS
There is a mechanism for Chinese companies to obtain US PMA. Chinese companies wishing to set up final production sites in the US could apply for US PMA and could use that as a mechanism to create FAA-PMA parts that are accepted all over the world. For many Chinese companies, the most efficient and effective way to accomplish this would be to partner with an existing FAA-PMA holder in the United States that has experience navigating the FAA regulatory system.
I just got off the phone with senior leadership at the FAA and all I can say is “WOW.”
The FAA is talking very seriously about a new model of certification for the aerospace industry focusing on approval of design processes and risk-based oversight in order to better leverage the FAA’s resources to ensure safety of the growing aerospace marketplace.
I shouldn’t be surprised. The models are there, and they’ve worked. We’ve sat on Federal Advisory Committees that have made these recommendations to the FAA. The industry has been talking about this for years. But sometimes when you talk about projects for too long, you start to lose hope that they will ever come to fruition.
But this idea has the support of the FAA’s senior management and that is what will make the difference.
The new model of certification will likely rely on paradigms like:
Under this new paradigm, a company that specializes in PMAs for landing gear (for example) would have a library of compliance methods – test and procedures that are designed to show compliance to the regulations (including ways to demonstrate true identicality with an existing compliant design). By following the compliance methods from the library, the company would be able to demonstrate compliance for future landing gear parts. This would allow the company to more readily develop compliant designs that can be readily PMAed based on the methods that are already known to be sound.
This would involve a major restructuring of how the FAA oversees design approval. Moving to a TSOA-like self certification should permit small businesses to react very nimbly to market forces and it allows the FAA to more readily focus its resources on real safety issues based on risk assessment. This paradigm could be supported by FAA Centers of Excellence that would be able top provide support to the design approval community on technical issues.
This paradigm could also impose more responsibility on the design approval applicant. It would likely be reflected in design systems that would be subject to FAA surveillance. This would replace the current model in which designs are reviewed. It would be analogous to the modern approval to production quality systems, in which the FAA approves system rather than approving each individual part and product that comes out of the system.
For PMA companies, this could help companies bring part to market faster, when those parts fall within the compliance library, because it would limit the FAA’s involvement in projects where compliance can clearly be shown based on known and accepted methods.
We are currently working with the FAA on a presentation (“challenge session“) about this new paradigm; we hope to add this to the program for the 2015 MARPA Conference.