SOLI transfer and SEP Class Rating revalidation.
There have been a number of recent queries concerning how a pilot holding a Part-FCL Class Rating in his/her licence may revalidate, particularly following State of Licence Issue transfer. For example, a UK-based pilot with an IAA licence wishing to revalidate an SEP Class Rating.
An FE whose certificate was issued by a different MS (e.g. the UK) may only revalidate the Rating through a Proficiency Check, NOT through 'experience'; also the IAA national requirements as stated in the Examiner Differences Document must be met.
Thus unless the pilot can find a UK-based IAA FE, he/she will need to ask a UK FE to fly a Proficiency Check with him/her.
Note also that FI/CRI holding FCL.945 privileges may only exercise them for pilots of the same MS - assuming that the MS actually permits the process. For example, the IAA does not issue FCL.945 privileges to its instructors.