| Role | Search-and-rescue aircraft |
|---|---|
| National origin | Spain |
| Manufacturer | Airbus Military (prime contractor EADS North America) |
| Introduction | 2009 |
| Status | In active service |
| Primary user | United States Coast Guard |
| Number built | 18[1] |
Developed from CASA/IPTN CN-235

Intended to replace the Dassault HU-25 Guardian jet, the HC-144A Ocean Sentry is part of the Coast Guard's Integrated Deepwater System Program of recapitalization and new-asset acquisition. Based on the CN-235-300 MP Persuader, the maritime patrol version of the CN-235 military transport, the HC-144 offers a longer endurance than the HU-25 it is replacing in U.S. Coast Guard service, as well as better performance in the low-level observation role. The HC-144A has an eight-hour endurance, which makes it suited for the command and control and search and rescue roles. Its rear ramp provides for transport of standard cargo pallets. It also features short takeoff and landing capability.
The first HC-144 was delivered to the U.S. Coast Guard in December 2006. Initial Operational Capability (IOC) was achieved in April 2009; thirteen Ocean Sentry aircraft were operational with the Coast Guard in January 2011. A total of 36 aircraft were planned to be procured, with twelve Mission System Pallets being swapped between the operational aircraft.
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
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Related development
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The HC-144A uses electronic systems on the Mission System Pallet roll-on, roll-off electronics suite from Lockheed Martin,
The first HC-144 was delivered to the U.S. Coast Guard in December 2006. Initial Operational Capability (IOC) was achieved in April 2009; thirteen Ocean Sentry aircraft were operational with the Coast Guard in January 2011.