Well, I side with DFC.
LASORS2008 states:
Revalidation by Proficiency Check
A SEP (Land) and/or TMG rating may be revalidated
by passing a Proficiency Check (LPC) with a JAR
authorised Flight Examiner (FE(A)) or Class Rating
Examiner (CRE(A)). If completed within the three months
preceding the expiry date of the rating(s), no loss of rating
validity will be incurred - the new rating expiry date will be
calculated from the preceding rating expiry date, not from
the date of the Proficiency Check.
Unfortunately the CAA cocked things up by inventing the absurd 'must be within 3 months' requirement for the
signature when revalidating by experience (although they won't admit it) - there being
no such requirement under JAR-FCL. Hence this nonsense:
If revalidating by flying experience, and providing
the examiner signs the Certificate of Revalidation
page within the 3 months prior to the rating expiry,
the validity of the revalidated rating will be calculated
from the date of expiry of the preceding rating.
