|A T-25 Universal taxiing at São Sebastião do Paraíso|
|Role||Basic trainer and ground attack aircraft|
|First flight||29 April 1966|
|Primary users||Brazilian Air Force
Chilean Air Force
The Neiva N621 Universal is a Brazilian propeller-driven basic trainer and ground attack aircraft manufactured by Indústria Aeronáutica Neiva. It is a cantilever, low-wing monoplane of all-metal construction, with retractable undercarriage and side-by-side seating.
Design and development
The Universal was designed in 1963 as a new primary trainer for the Brazilian Air Force, as a replacement for the T-6 Texan and Fokker S-11/S-12 types then in use. The prototype (Registration PP-ZTW) first flew on 29 April 1966. The Brazilian Air Force ordered 150 aircraft as the T-25 Universal, and increased this order in 1978 by an additional 28 aircraft. A further developed version (designated the YT-25B Universal II) first flew on 22 October 1978 but was not put into production.
The Universal was also adopted as a counter-insurgency aircraft. It was later replaced by the Tucano in both the advanced training and attack roles, but it is still used as a primary and basic trainer at the Academia da Força Aérea Brasileira (Brazilian Air Force Academy).
In 2005, the Brazilian Air Force donated six T-25s to the Fuerza Aérea Paraguaya and another six to the Fuerza Aérea Boliviana.
Data from Jane's Aircraft Recognition Guide 
- Crew: 2: student, instructor
- Length: 8.76 m (28 ft 9 in)
- Wingspan: 11.00 m (36 ft 1 in)
- Height: 2.97 m (9 ft 9 in)
- Wing area: 17.20 m² (185.15 ft²)
- Empty weight: 1,150 kg (2,535 lb)
- Max takeoff weight: 1,700 kg (3,747 lb)
- Powerplant: 1× Lycoming O-540 six-cylinder horizontally-opposed air-cooled piston engine, 300 hp (224 kW)
two hardpoints; 7.62 mm machine gun pods; bombs; rockets
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