LASORS 2006 Section J1.7
If a CPL and IR are not granted within the 36 month
acceptance period then the ATPL theory credit will
lapse. Candidates will be required to re-pass all ATPL
theoretical knowledge examinations to regain ATPL
theory credit. However, it has been agreed that where
a candidate has previously passed all ATPL theoretical
knowledge examinations but were not granted a CPL/
IR within the 36 month acceptance period, the amount
of ATPL theoretical knowledge instruction will be at the
discretion of the Head of Training of the Approved FTO.
In other words 3 years.
Safe flying.