I stand to be corrected but I don't believe EASA have yet issued Technical Log requirements. Thus far, EASA have stated that they will initially adopt JAR-OPS and then make appropriate changes, so you need to look at the link. JAR-OPS 1.915 Subpart M is where you will find the detail.
http://www.jaa.nl/publications/jars/563242.pdf
Unfortunately, the acceptable means of compliance is not shown on-line so you may need to find someone who can provide you with a copy.