Taken from LASORS C1.3
These examinations contain multiple-
choice questions for the most part and are
normally conducted under the auspices of a
Flight Training Organisation or a Registered
Facility. An applicant shall be deemed to
have successfully completed the theoretical
examinations for the JAR-FCL PPL(A) when
awarded a pass in all of the above examinations
within a period of 18 months counted from the
end of the calendar month when the applicant
first attempted the examination. A pass
will be accepted for the grant of a JAR-FCL
PPL(A) during the 24 months from the date of
successfully completing all of the theoretical
knowledge examinations.
So, from the time you complete the first exam, you've got 18 months to finish them.
Once you've completed all the exams, you've got a further 24 months to pass the skills test.