HC and TLN.
A significant part of the rescue opperation last night was by aircraft and vessels equipped with AIS and I tracked them online. MCA SAR aircraft are on AIS, as are the Lerwick lifeboat and the cargo ferry. For a plot every minute or so, that is about every 4000m for a cruising helo.
As I write this, the BA shuttle is about to hit the ground at Dyce as it approaches at 125kts.
Another a/c on a holding to the NW.