Thanks. I should not have expected CAP 804 to be useful.
For info, the FCL document is this one:-
http://easa.europa.eu/rulemaking/doc...202008-17b.pdf
and the relevant bits are:-
(b)
Pass standards
(1) A pass in an examination paper will be awarded to an applicant achieving at least 75% of the
marks allocated to that paper. There is no penalty marking.
(2) Except when otherwise determined in this Part, an applicant has successfully completed the
required theoretical knowledge examination for the appropriate pilot licence or rating when
he/she has passed all of the required subjects within a period of 18 months counted from the
end of the calendar month when the applicant first attempted an examination.
(3) If an applicant has failed to pass one of the examination papers within 4 attempts, or has
failed to pass all papers within either six attempts or the period mentioned in paragraph (2),
he/she shall retake
the complete set of examination papers.
Before retaking
the examinations, the applicant shall undertake further training at an
approved training organisation. The extent and scope of the training needed shall be agreed
between the training organisation and the competent authority, based on the needs of the
applicant.
(c)
Validity period
(1) The successful completion of the theoretical knowledge examinations will be valid:
(i) for the issue of a leisure pilot licence, a private pilot licence, a sailplane pilot licence or
a balloon pilot licence, for a period of 24 months;
(ii) for the issue of a commercial pilot licence or instrument rating, for a period of 36
months;
(iii) the periods in (i) and (ii) shall be counted from the day when the pilot successfully
completes the theoretical knowledge examination, in accordance with (b)(2).
(2) Provided that the applicant holds an instrument rating, the completion of the airline transport
pilot licence theoretical knowledge examinations will remain valid for a period of 7 years from
the last validity date of the instrument rating entered in the commercial pilot licence for the
issuance of an airline transport pilot licence.