| General information | |
|---|---|
| Type | Advanced jet trainer and light attack aircraft |
| Manufacturer | CASA |
| Status | Operational |
| Primary users | Spanish Air and Space ForceChilean Air Force Honduran Air Force Royal Jordanian Air Force |
| Number built | 166 |
| History | |
| Introduction date | 17 March 1980[1] |
| First flight | 27 June 1977 |

The C-101 was designed in response to a Spanish Air Force requirement issued in 1975, calling for a new jet trainer to replace its aging fleet of Hispano HA-200s and Ha.220s. Akin to the majority of contemporary European jet trainers, it was also to have a limited attack capability. During 1972, Hispano had been absorbed by Spanish aircraft company Construcciones Aeronáuticas SA (CASA), who took an interest in the trainer requirement. During October 1975, CASA was awarded a development contract based upon their submission, requiring a pair of static airframes and four flight-capable prototypes to be built for testing purposes at a cost of 1,297 million pesetas ($22 million).
To develop the aircraft, CASA sought technical assistance from abroad. Both the German manufacturing conglomerate Messerschmitt-Bölkow-Blohm (MBB) and American defense company Northrop opted to participate in the venture; specifically, engineers at MBB worked on the design of the rear fuselage and tail section while Northrop's team were responsible for the design of the aircraft's wings and engine inlets. Out of these efforts, a relatively conventional design was developed; according to aviation author John C. Fredriksen, the principles of simplicity and economy were highly emphasised by the design, shunning high performance features
Endurance
Combat RANGE
Aircraft Speed
Max Crew
The final version of the C-101 to be developed, designated C-101DD, was first demonstrated by CASA during 1985. This model featured vastly improved avionics and featured systems such as a head-up display, HOTAS-cockpit, AN/ALR-66 radar warning receiver, chaff and flare countermeasures, as well as the capability to carry the AGM-65 Maverick air-to-ground missile; however, as of 2000 it had not attracted any orders.
Sixteen similar aircraft, the C-101CC-04 were sold to Jordan.
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.