HFD,
The list of class and type ratings can be found at;
OEB General -TypeRatings list (Aeroplanes/Helicopters) and Licence endorsement list
column 3 indicates that differences training is required when moving between variants or other types of aeroplane which are separated by a line in column 2
There is a big important "or" in that statement.
So the above quote says;
Where you see a (D) it means that differences training is required when moving brtween types of aeroplane which are separated by a line in column 2
or when moving between variants.
If you look at the MEP line there is a (D) which based on your quote requires differences training when moving between variants.
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Bose,
If you sit in the aircraft and talk about the operation then the person whom you have spent the time with will have gained knowledge alone.
You can talk all day about the undercarriage system and it's back-up but until the system is used then noting other than knowledge has been obtained.
JAR-FCL :
Differences training requires
additional knowledge and training on an
appropriate training device or the aeroplane.
Familiarisation training requires
the acquisition of additional knowledge.
It is thus clear that sitting in the aircraft having everything explained and discussed is familiarisation training.
Flying with the student and getting them to operate the aircraft and system(s) is differences training.
Remember that the differences training required when moving between MEP variants is not simply because of a different system (VP prop) or retractable undercarriage it is simply because the type is a different variant.
Thus going from a seneca to a seminole requires differences training - skill training - not because the aircraft systems are difference but because they are different aircraft.
Regards,
DFC