The HC-144A has been involved in several missions during its career , including involvement in the Marquis Cooper search-and-rescue mission , the response to the 2010 Haiti earthquake , environmental missions monitoring the Deepwater Horizon oil spill , transporting endangered marine animals for rehabilitation , and being involved with Hurricane Sandy relief efforts . In June 2014 , the Coast Guard 's fleet of 17 HC-144s reached 50,000 flight hours , five years after achieving IOC . The Ocean Sentry is flown more hours per airframe in a year than any other Coast Guard aircraft
2010 Haiti earthquake
2010 Haiti earthquake
EADS HC-144 Ocean Sentry