Hi Phil,
Was it the existing NPA25 LO or NPA29 LO the questions were written for? The NPA 25 Learning Objectives listed requirements as "LO State the requirements for First Aid Kits (OPS 1.735) where as the current regulations are a different format CAT.IDE.A.220 First-aid kit
What was the latest amendment you used with COMMISSION REGULATION (EU) No 965/2012? Was it COMMISSION REGULATION (EU) 2015/640 of 23 April 2015. That takes it to about 401 pages.
The EASA Easy Access Rules for Air Operations runs to 1673 pages and is COMMISSION REGULATION (EU) No 965/2012 with guidance material.