Wenn ich das richtig sehe, wird das in Opinion No 04/2017 neu geregelt. Dann (Q2/2018) ist Mischbetrieb und damit Flugtraining auf AOC-Flugzeugen möglich:

ORO.GEN.310 Use of aircraft included in an AOC for other-than-CAT operations

(a) The aircraft included in an AOC may be used on a short-term basis by the same AOC holder or by other operators, for operations other-than-CAT, performed in accordance with Part-NCC, Part-NCO or Part-SPO

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GM1 ORO.GEN.310 Use of aircraft included in an AOC for other-than-CAT operations
EXAMPLES OF POSSIBLE SCENARIOS

The following list provides examples of possible scenarios with organisations and operators to which this rule applies:

(a) the same AOC holder providing the aircraft, using the aircraft either:

1. as a declared operator conducting SPO activities (commercial or non-commercial, including high-risk activities) in accordance with Part-ORO and Part-SPO for operations with complex motor-powered aircraft or
2. as a flight training organisation (approved training organisation (ATO) or declared training organisation (DTO)) conducting operations in accordance with Part-NCC or Part-NCO.

When the AOC holder conducts NCC or NCO operations with the aircraft included in its AOC, the provisions of ORO.AOC.125 apply; a declaration is not required. When the AOC holder conducts SPO activities with the aircraft included in its AOC, the provisions of Part-SPO apply. This implies that the operator should submit a declaration and apply for an authorisation if performing high-risk activities;

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