Jetblu
I over copied as I meant to refer to G-KURK
Interestingly it would appear that the accident to G-KIRK should have been notified to the AAIB as the state of registration where an accident occurs outside a state.
Annex 13 provides:
5.3 When the location of the accident or the serious incident cannot definitely be established as being in the territory of any State, the State of Registry shall institute and conduct any necessary investigation of the accident or serious incident. However, it may delegate the whole or any part of the investigation to another State by mutual
arrangement and consent.
5.3.1 States nearest the scene of an accident in international waters shall provide such assistance as they are able and shall, likewise, respond to requests by the State of Registry.