News: EH-101 demonstates SAR & Rescue credentials
"A key feature of the EH101 in SAR service is its ability to undertake long range cruise on two engines whilst reverting to three engines for the rescue operation. The three-engine configuration is especially significant in search and rescue operations since, unlike current SAR helicopters, the EH101would be able to continue with its mission even if one of its engines failed in the hover."
Rotor & Wing Magazine :: Presidential Debate
"Both the EH101 and S-92 were designed as Sea King replacements, albeit for different missions. In the late 1970s,
AgustaWestland (then EH Industries) aimed at a helicopter that would pack more fuel and sub-hunting electronics in the Sea King footprint aboard British and Italian warships. To carry about 50 percent more than a Sea King, yet recover from a hover in an engine-out emergency, the EH101 used three engines to turn its five-bladed main rotor."