If the incident was off Cornwall for example and your MPA is in Scotland and your helo is from Culdrose...
Exactly the scenario I was involved in during the 70's. The Nimrod was airborne less than 30 minutes after the call, and arrived on scene before the two Sea Kings arrived (a spare was required due to the nature of the illness on board the ship - meningitis). Choppers were at their range limit - about 250nm off Land's End. It got complicated in the middle of the night, and the SK carrying the patient had to be escorted all the way back to Treliske Hospital in Truro (no fuel/no radar). They didn't have enough fuel to get back to Culdrose. We returned to ISK. Good job
