The selection of 50% of tasks cannot be selected according to the glossary. Paragraph 3.2 of Appendix III to Part-66 clearly states that ‘the tasks selected shall be representative of the aircraft and systems both in complexity and diversity. In addition, the practical training should particularly address the tasks which cannot be explained by theoretical training only. While relatively simple tasks may be included, other more complex tasks shall also be incorporated and completed as appropriate to the aircraft type.
Regarding the way to read the table in paragraph 3.2, the lines aims at covering the main systems so that no line relevant to the particular aircraft type should be omitted in the selection. Inside each line applicable to the aircraft type, half or more of the crosses can be selected. From a learning point of view, selecting 2 simple tasks as LOC and SGH would not be “representative”, while selecting LOC and TS, for example, would be much more appropriate.
When selecting the tasks, the usage of filtering method based on the criteria similar to that described in AMC to paragraph 3.1(d) of Appendix III to Part-66, point 5 f) is recommended.