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Forum for Aeronautical Software

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The Forum Aeronautical Software (FAS) has been established to provide a forum for those involved in the development of aeronautical software to share experiences and good practices and to provide a platform for the exchange of information regarding subjects addressed in the “software document suite”, new and emerging technologies, development methodologies, interesting use cases and other topics related to aeronautical software and related technologies.
The FAS is a joint RTCA/EUROCAE User Group that holds discussions and develops information papers called FAS Topic Papers (FTPs) relating to aeronautical software topics in efforts to harmonize these information papers. The purpose of this area of the RTCA/EUROCAE website is to provide an overview of the FAS and to provide access to selected information FTPs. Topics typically addressed by the FAS will relate to aeronautical software, including topics covered by the following set of RTCA/EUROCAE published documents (referred to as the “software document suite”):

DO-178C/ED-12C – Software Considerations in Airborne Systems and Equipment Certification
DO-278A/ED-109A – Software Integrity Assurance Considerations for Communication, Navigation, Surveillance and Air Traffic Management (CNS/ATM) Systems
DO-248C/ED-94C – Supporting Information for DO-178C and DO-278A
DO-330/ED-215 – Software Tool Qualification Considerations
DO-331/ED-218 – Model Based Development & Verification Supplement to DO-178C and DO-278A
DO-332/ED-217 – Object Oriented Technology and Related Techniques Supplement to DO-178C and DO-278A
DO-333/ED-216 – Formal Methods Supplement to DO-178C and DO-278A

Any information paper (FTP) released by FAS has been coordinated among the members of the group and has been approved by the FAS co-chairs for release. These papers do not constitute official policy or position from RTCA/EUROCAE or any regulatory agency or authority. These documents are made available for educational and informational purposes

Goals

The goals of the FAS are as follows:

To share lessons learned in the use of the “software document suite” and to encourage good practices and promote the effective use of RTCA’s and EUROCAE’s publications.
To develop FAS Topic Papers related to subjects covered by “software document suite” or other related aeronautical software industry topics.
To identify and record any issues or errata showing the need for clarifications or the need for modifications to the “software document suite”.

If the FAS Executive Management Committee determines there is a general FAS agreement for proposed changes to the “software document suite” or the need for a new technology supplement, the FAS Executive Management Committee will bring this to the attention of RTCA/EUROCAE and FAA/EASA as appropriate with a request for discussion of the need for a new special committee/working group. It is expected that the efforts of the FAS would be used as input to the new special committee/working group thus the text development process would be more efficient as it would start with baseline material prepared by an expert user group.

Membership

Initial membership of FAS is limited to the Executive Management Committee and a Technical Leaders Group plus invited members who may be able to share their experience and expertise in the discussions related to and development of FTPs. The current membership is open to employees of companies that have membership to either RTCA or EUROCAE, with an associated role of either primary or observer.
Executive Management Committee – comprising the Executive Management Committee Leaders identified and agreed with RTCA and EUROCAE.
FAS Technical Leaders Group Members are those members identified by the Executive Management Committee to assist in leading Technical Groups (TGs) that will work on specific Information Papers as agreed by the FAS Executive Management Committee.
While membership is initially being managed through the Executive Management Committee, FAS is able to collect and store details of anyone wishing to Register Interest in the committee for future membership consideration.

Note that any contact and other information provided to the FAS shall be stored and maintained by the Executive Management Committee and will not be made available in the public domain. Click Registration of Interest to download the registration of interest form and upon completion, please submit it to rmorrison@rtca.org.

Publicly Available FAS Topic Papers

FAS Topic PaperFTP TitleApplicable To
FTP1000 Parameter Data Items Clarifications DO-178C/ED-12C
FTP1002 DO-331/ED-218 Annex Tables MB.A-3/MB.C-3 and MB.A-4/MB.C-4 Item Clarification DO-331/ED-218
FTP1003 Tool Operational Requirements ValidationDO-330/ED-215
FTP1004 Clarification of developer-TORDO-330/ED-215
FTP1007Consistency between DO-330/ED-215 Tables 11-1 and 11-2 on COTS tools and SQA ObjectivesDO-330/ED-215
FTP1008Inconsistency between Tool Qualification Assurance objectives and Tool Planning process objectives for TQL-5DO-330/ED-215
FTP1009Qualification of Tools Used to Develop or Verify a Software ToolDO-330/ED-215
FTP1015DO-330/ED-215 Annex A Table T-10 TQL 5DO-330/ED-215
FTP1016DO-330/ED-215 Developer – TQP ClarificationDO-330/ED-215
FTP1018DO-330/ED-215 Section 11.5 Dissimilar ToolsDO-330/ED-215
FTP1026Field Loadable Software (FLS) Outside of Installed EnvironmentDO-178C/ED-12C, DO-248C/ED-94C
FTP1028Are the activities described in the DO-178C/ED-12C document set mandatory?DO-178C/ED-12C, DO-248C/ED-94C, DO-278A/ED-109A, DO-330/ED-215, DO-331-ED-218, DO-332/ED-217, DO-333/ED-216
FTP1037Formal Methods Objectives for Executable Object CodeDO-333/ED-216
FTP1044Clarification of Objective 4 from DO-330/ED-215 Annex A Table T-0 and Paragraph 6.2.2, item aDO-330/ED-215
FTP1049DO-332/ED-217 Software/Assurance Level Differs with DO-178C/ED-12C and DO-278A/ED-109A for Memory Management Activities DO-332/ED-217
FTP1051 Alternative Development ApproachesDO-178C/ED-12C, DO-248C/ED-94C, DO-278A/ED-109A, DO-330/ED-215, DO-331-ED-218, DO-332/ED-217, DO-333/ED-216
FTP1052Compiler ClarificationsDO-178C/ED-12C, DO-248C/ED-94C, DO-278A/ED-109A
FTP1053 Use of Supplements ClarificationsDO-333/ED216, DO-331/ED-218, DO-332/ED-217
FTP1054Operating Systems ClarificationsDO-178C/ED-12C, DO-278A/ED-109A
FTP1055Tool Qualification ImpactsDO-178C/ED-12C, DO-278A/ED-109A, DO-330/ED-215
Several papers were developed in response to questions/concerns from the UAS Community which include: FTP1049, FTP1051, FTP1052, FTP1053, FTP1054, and FTP1055.

Questions for the FAS

If you have a question about any of the DO-178C documents suite or on the documents published by FAS, please submit it to: rmorrison@rtca.org.

In addition, FAS has reviewed the entire software standards suite (paper and PDF) and requested RTCA and EUROCAE issue errata/corrigenda. The following documents are affected:

RTCAEUROCAETitleLink to Errata
DO-178CED-12C Software Considerations in Airborne Systems and Equipment Certification Click Here
DO-278AED-109ASoftware Integrity Assurance Considerations for Communication, Navigation, Surveillance and Air Traffic Management (CNS/ATM) Systems Click Here
DO-248CED-94CSupporting Information for ED-12C and ED-109A Click Here
DO-330ED-215 Software Tool Qualification Considerations Click Here
DO-331ED-218 Model Based Development & Verification Supplement Click Here
DO-332ED-217Object Oriented Technology and Related Techniques SupplementN/A
DO-333ED-216 Formal Methods SupplementN/A
The errata are available on the for download at the links indicated above.

Contacts

If you have a question about any of the DO-178C/ED-12C document suite or the documents published by the FAS, please submit a question to fas@rtca.org.

Contacts
RTCA (rmorrison@rtca.org)
EUROCAE (eurocae@eurocae.net)
Co-Chair: Patty Bath (patty.bath@avistainc.com)
Co-Chair: Christophe Cucuron (christophe.cucuron@airbus.com)

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