LASORS might not be a legal document, but it is a reasonable 'code of conduct'.
In any case, the FEH
requires that the instructor who conducts the 1 hr training flight shall sign the applicant's logbook and include his CAA reference no.
If a FE signs a revalidation which is not supported by such a signed entry, he has failed to follow the CFE's requirements and has, therefore, not acted in accordance with his authorisation.
Presnt me with a logbook without such a signed entry and I would offer 2 alternatives:
Either 1. Go and fly a 1 hr training flight and have it 'signed off' by the FI.
Or 2. Fly a revalidation LPC.
And whereas a FI revalidation proficiency check will count towards SEP revalidation by experience in lieu of a 'training flight', a FE 'dummy skill test' won't......