Dear All
I know this is outside our usual RAF 'box', but would be very grateful if anyone was look up the following aircraft in:

Howard, L. Burrow, M and Myall, E. Fleet Air Arm Helicopters since 1943. Staplefield, Sussex, UK: Air-Britain, 2011. ISBN 978-0-85130-304-8

Royal Navy Sea King HAS2 XZ577

Could you tell me what is written in the book for this aircraft?

Thanks in advance.
James