1962 as carrier-landing trainers to the Brazilian Navy and were modified with a carrier arrestor hook. They were later transferred to the Brazilian Air Force. T-28R-2 Nomair II Modified to have a cramped five-seater cabin (one pilot and two rows of two passengers) that opened from the port side. Ten aircraft were modified in all; one was sold to a high-altitude photographic company. RT-28 Photo reconnaissance conversion for counter-insurgency use with Royal Lao Air Force. Number of conversions unknown. AIDC T-CH-1 A derivative of the T-28 developed by AIDC in Taiwan, the AIDC T-CH-1 was powered by a 1,082 kW (1,451 hp) Avco Lycoming T53-L-701 turboprop engine. Fifty aircraft were produced for the Taiwanese Air Force between March 1976 and 1981. The type has since been retired. Operators Argentine Air Force - 34 T-28A Argentine Naval Aviation. 65 ex-French Air Force T-28S Fennec aircraft. Last nine transferred to Uruguayan naval aviation in 1980. Bolivian Air Force at least six T-28Ds. Brazilian Navy - 18 T-28C Democratic Republic of the Congo Air Force of the Democratic Republic of the Congo - 14 T-28C, 3 T-28B, 10 T-28D Cuban Air Force - 10 T-28As were ordered by the Batista regime but were never delivered owing to an arms embargo, although at least one T-28 seems to have been acquired at some stage which was put on display at a museum at Playa Girón Dominican Air Force Ecuadorian Air Force - nine T-28A Ethiopian Air Force - 12 T-28A and 12 T-28D French Air Force - 148 T-28A airframes modified in France (1959) to make the T-28S Fennec COIN model. Haitian Air Force - 12 ex-French Air Force Honduran Air Force - eight former Moroccan Air Force Fennecs. One delivered, seven others impounded at Fort Lauderdale Japanese Air Self-Defense Force - one T-28B Khmer Air Force operated 47 T-28s in total in service. Royal Lao Air Force - 55 T-28D Mexican Air Force - 32 T-28A Royal Moroccan Air Force - 25 Fennec aircraft Nicaraguan Air Force - six T-28D Philippine Air Force - 12 T-28A Republic of Korea Air Force Royal Saudi Air Force Republic of Vietnam Air Force Tunisian Air Force - Fennec ROC Air Force Royal Thai Air Force - 88 T-28Ds delivered. Retired 1984. United States Army United States Air Force - 1194 T-28A, of which 360 converted to "D" United States Navy - 489 T-28B and 299 T-28C