Latest: No mechanical anomalies found on Rescue 116 recorder, says Air Accident Investigation Unit

Latest: The Air Accident Investigation Unit has released a statement confirming that no mechanical anomalies were found on the health and usage monitoring system and multi-purpose flight recorder recovered from Rescue 116.

Update 5.15pm: The Air Accident Investigation Unit has released a statement confirming that no mechanical anomalies were found on the health and usage monitoring system and multi-purpose flight recorder recovered from Rescue 116.

"The AAIU is mindful that Sikorsky S-92A helicopters are in operation around the world in a variety of roles, including search and rescue.