Cs-acns Issue 3

[Landers Piechotka]

ICAOhas just released the 5th Edition of the PBN Manual (Doc 9613). This release is an advanced unedited version but can now be used. A general summary of changes are as follows. The major changes will be to A-RNP which now supports SIDs/STARs at RNP 0.3 and does not cover the Final Approach Segment. The RNP 0.3 navigation specification is now a dedicated rotorcraft specification. RNP AR operations now covers departures as well as approach. There are small updates to the RF appendix and a new Attachment on VNAV in the Final Approach segment. The new manual can be accessed here.

In addition, EASA released the fourth issue of the CS-ACNS in early April. For Navigation the notable changes are in Subsection 5 - Vertical Navigation in Final Approach and Subsection 6 - RNP Authorisation Required (AR).

We received twenty-seven individual responses to our consultation. Twenty-five respondents fully supported the proposed approach. Two respondents did not fully support the proposal, one cited the need for greater involvement of the CAA and UK stakeholders in the CS development process. The other respondent supported the adoption of new and revised EASA CS but wanted the opportunity to make representations to the CAA on each proposed amendment prior to adoption.

Several respondents proposed extending the scope of the proposed policy to include Certification Specifications used outside the initial airworthiness domain. Other comments included proposals for including Special Conditions and Certification Memos in the scope of the new policy.

Several respondents also asked if the CAA could further expedite the CS adoption process as the current approach disadvantages British business who want to produce designs conforming to the latest specifications.

We acknowledge that stakeholders strongly support the proposed changes. There is a clear view that expediting the adoption of EASA Certification Specifications is in the best interests of businesses in the UK.

We note the comments that seek to extend the scope of the policy to Special Conditions and to CS applicable outside the initial airworthiness domain. We have decided not to include these additional areas in the scope of the new policy until we have gained some experience of implementing the new policy. Of the comments that did not fully support the proposal, we note the desire to increase the involvement of the CAA in the development of internationally harmonised standards. The CAA will endeavour to increase UK involvement as our design capability grows. Regarding the remaining comment, the CAA will not be taking forward the proposal to systematically consult on each new or amended CS. This would inevitably extend the time taken to adopt changes and potentially undermine the main objective of the proposal to increase competitiveness of businesses in the UK through reducing the time it takes to adopt new and revised EASA CS.

Certification Specifications (CS) are established by the Civil Aviation Authority (CAA) using the provisions of Article 76 and 115 of the Basic Regulation and provide design and performance specifications for use in the aircraft design certification process.

In the case of certification specifications and other detailed specifications, the CAA is required to establish a procedure for the prior consultation of relevant stakeholders before adoption. These obligations are currently fulfilled through the CAA running an individual consultation exercise for each update to a specific certification specification.

Certification specifications and their equivilent are developed by major regulators such as the Federal Aviation Administration (FAA), the European Union Aviation Safety Agency (EASA), Transport Canada and the National Civil Aviation Agency (ANAC) in Brazil, with extensive input from the aircraft design and manufacturing community. Their contents are developed, consulted on and amended with both the adequacy of the specification and technical harmonisation in mind.

The CAA supports the development of harmonised certification specifications and wishes to ensure that stakeholders can make use of new and updated CS without undue delay after they are published. Consequently, the CAA would like to implement an abridged adoption process that would not result in an additional round of consultation in the United Kingdom after other significant regulators have published a new or revised certification specification.

This will enable British businesses to design and produce products, parts and articles, that when certified by the CAA can be exported without the need for redesign to meet the specifications implemented in other major regulatory systems.

Following an internal review the CAA proposes to adopt new and revised Certification Specifications issued by the European Union Aviation Safety Agency without further consultation, unless the CAA considers there are deficiencies in these Certification Specifications.

In this case, the CAA will develop its own proposal and conduct an individual consultation exercise with relevant stakeholders, before making a final decision to adopt the new or revised Certification Specification.

It is important to the CAA that everyone has an opportunity to voice their opinion on matters that could affect them. There is also a legal requirement to consult when creating or amending its policy on the adoption of Certification Specifications.

We welcome comments from every sector of the community. This includes the public, government agencies and all sectors of the aviation industry, whether as an aviator, aviation consumer and/or provider of related products and services.

We cannot consider comments received after this date. We will assume that all responses can be published once the consultation has closed. There is an option to request for your name to remain private, but in any event your email address will never be published.

This consultation will close on 15 September 2023. We cannot consider comments received after this date. We will assume that all responses can be published once the consultation has closed. There is an option to request for your name to remain private, but in any event your email address will never be published.

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The aircraft maintenance programme should include the instructions for continuing airworthiness issued by the type certificate holder in relation to the RVSM operations certification in accordance with AMC1 ACNS.A.GEN.010.

(CS ACNS.A.GEN.010 Instructions for continued airworthiness - Instructions for continued airworthiness for each system, part or appliance as specified in this CS ACNS and any information related to the interface of those systems, parts or appliances with the aircraft are to be provided.)

3) Ensure the proper maintenance of airframe geometry for proper surface contours and the mitigation of altimetry system error, surface measurements or skin waviness as specified in the instructions for continued airworthiness (ICA), to ensure adherence to RVSM tolerances

The adequacy of the test equipment should be established in accordance with the type certificate holder recommendations and taking into consideration the required test equipment accuracy and the test equipment calibration.

Sofema Aviation Services (SAS) and SofemaOnline (SOL) are pleased to offer a range of EASA compliant regulatory training courses in support of Multiple Regulatory Compliance and Competence Development including RVSM.

You do not need to use your personal computer to do CS coursework. The department provides machines running Unix (Linux) and Windows as well as appropriate software for all CS courses. Machines are located in the department computer labs in the Computer Science Building. Additional information on these facilities is available.

NOTE: make the above one line all assignments need to be able to run on department Linux machines unless instructor specifies otherwise. Please make sure any work you do on your personal computer is double checked on a Linux machine before you submit it.

No students will be allowed to declare a CS Minor as an Undeclared Math/Engineering Intent (or any undeclared major). Students wishing to declare a CS minor will be held to the same standards as those applying to the major.

The Computer Science Department hopes all students are able to succeed in their computer science courses. The Department also wants to ensure that its graduates are capable of meeting any challenges that come their way.

Computer Science majors (and minors) must pass certain important courses with a C or better (2.0 GPA), or be required to retake the course. Adequate performance in these courses is essential to success as a computer scientist. The following courses must be passed with a C or better (note that C- grades do not meet this criteria):

Receiving any grade less than a C in any of these courses means a student must repeat the course. For the purposes of using a course as a prerequisite, obtaining less than a C in one of these courses is the same as not having taken it at all.

It is the policy of the Computer Science Department to adhere strictly to the prerequisite structure established by the Faculty. Students must possess the background necessary to succeed in subsequent CS courses. Students will therefore be required to follow the prerequisites approved and published by the University.

Students believing they should be granted a prerequisite waiver even though they do not meet the conditions set out above can appeal by petitioning the CS Department Chair, in writing, giving the reason why their request should be granted. Exceptions will be made only in very rare cases.

Note: The Key Advisor has only limited discretion and is not empowered to grant exceptions to rules set out by collective faculty action. That being said, it is strongly recommended that students speak with their Key Advisor before submitting any appeals.

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