Nr Fairy.
JAR OPS 3 Subparts K & L
This area of JAR OPS governs equipment needed for your helicopter on PT flights.
Operators must keep a document on file to prove how there aircraft meets certain requirements of Subparts K & L.
If you look through OPS3 Subparts K & L you will see a section referring to flights over water and emphasis on Performance Gp3.
JAR OPS 3 states that you must be able to alight safely in the event of an engine failure.
We have a site here in Yorkshire known as Waterton Park, a hotel on an island and so I had a particular interest in finding what equipment was required for Performance Gp3. Reading JAR OPS 3 it appears you need floats and life jackets. The exact equipment standards required are listed in the Appendix.
Hope this helps. The glorious laborious world of rules and regulations! If you need any further assistanc then PM or email me.
Regards, JB