Aircraft performance certification - Electronic flight bag software
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Tutor / director / evaluatorZola, Enrica Valeria
Document typeBachelor thesis
Rights accessRestricted access - author's decision
The continuous improvement of Electronic Flight Bag Software tools used in ATR for performance and weight & balance computations has made the EASA-OEB recommendation published in 2013 to become outdated. In view of this shortage, ATR aims to elaborate a set of technical reports covering the operational validation for takeoff, landing and W&B modules. The idea is to extend the operational suitability validation to further aircraft categories, as well as providing support to iPad EFB, which was not considered in the previous EASA-OEB publication. The legal framework in which the project is bounded is defined by EASA AMC 20-25, but studies carried out by EASA itself conclude that authorities give EFB software developers some freedom when validating the tool. The fact of AMC 20-25 being more like a recommendation rather than a limitation is simultaneously favourable and problematic, since the elaboration of the reports needed for validation can be laborious. Hence, my objective is to learn the ATR EFB software functioning and structure, to determine the most appropriate method to elaborate the aforementioned documentation for performance and W&B computations validation. Another important remark is that W&B module was introduced in the software after the EASA evaluation for takeoff and landing modules was published, which means that it is neither included in the former EASA recommendation report. Since it is essential to demonstrate the correct functioning of the unit, the project also includes the necessity to develop and document a completely new automatic testing module for W&B. The test elaboration is one of the most laborious tasks of the project because it requires a perfect understanding of the current validation chain used to test takeoff and landing modules. My objective is to develop the code to integrate W&B testing in the same validation chain without interfering with the existing one, and decide the method that will be used to check if the EFB results are correct. These documents and test will importantly assist EFB operational validation, due to the fact that, a better knowledge and analysis of the software will facilitate the entire approval process between airlines and NAAs, thus saving time and resources in future approvals.