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Neiva T-25 (Universal)


Basic Trainer / Light Attack Aircraft


Brazil | 1966



"Fewer than 200 examples of the homegrown Brazilian Neiva T-25 Universal trainer were produce - but these proved important to the country and some of its allies."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the Neiva T-25A Basic Trainer / Light Attack Aircraft.
1 x Lycoming IO-540-K1D5 6-cylinder air-cooled radial piston engine developing 300 horsepower and driving a two-bladed, constant-speed propeller at the nose.
Propulsion
186 mph
300 kph | 162 kts
Max Speed
20,013 ft
6,100 m | 4 miles
Service Ceiling
932 miles
1,500 km | 810 nm
Operational Range
1,315 ft/min
401 m/min
Rate-of-Climb
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the Neiva T-25A Basic Trainer / Light Attack Aircraft.
2
(MANNED)
Crew
28.2 ft
8.60 m
O/A Length
36.1 ft
(11.00 m)
O/A Width
9.8 ft
(3.00 m)
O/A Height
2,535 lb
(1,150 kg)
Empty Weight
3,748 lb
(1,700 kg)
MTOW
Armament
Available supported armament and special-mission equipment featured in the design of the Neiva T-25 (Universal) Basic Trainer / Light Attack Aircraft .
If Armed:
2 x 7.62mm Machine Gun Pods on two external hardpoints.
Variants
Notable series variants as part of the Neiva T-25 (Universal) family line.
T-25 'Universal' - Base Series Designation.
YT-25A - Developmental prototype model.
T-25A - Initial production model.
YT-25B - Proposed modernized form; single prototype flown; no serial production.
Authored By: Staff Writer | Last Edited: 12/16/2019 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

During the early-1960s, the Brazilian Air Force was on the hunt for a successor to its aging stock of American-made T-6 'Texan' and Dutch-originated Fokker S-11/S-12 basic trainers (the pair held roots in the 1930s and 1940s, respectively). A modern, local solution was selected for the basic training / ground attack role in the Neiva N621 'Universal', a single-engine, two/three-seat monoplane form built of all-metal construction. Some 189 total units were ultimately realized and these went on to stock the inventories of the Brazilian Air Force as well as the air services of Bolivia, Chile, and Paraguay.

The series began in the YT-25A prototype of largely conventional design. The monoplane wing members were fitted ahead of midships and low against the sides of the fuselage. The fuselage itself was widened to include the two cockpit seats in a side-by-side arrangement, offering excellent communications between student and instructor. The engine was installed in the usual way in the nose, the powerplant becoming the American-made Lycoming IO-540-K1D5 series 6-cylinder air-cooled piston engine offering 300 horsepower. This was used to drive a simple, two-bladed propeller at the nose.

The tail section was just as traditional, incorporating a single vertical with slightly raised horizontal planes. For ground-running, there was a wholly-modern wheeled tricycle arrangement that was completed retractable into the design - preserving the aircraft's aerodynamic efficiency.

A first-flight in prototype form was recorded on April 29th, 1966 and led to a 150-strong order by the Brazilian Air Force, which adopted the design formally as the T-25 'Universal'. By the end of the 1970s, the service returned with an order for another 28 units.

The Universal was given a running length of 28.2 feet with a wingspan measuring 36 feet and a height of 9.9 feet. Empty weight was rated at 2,535lb against an MTOW of 3,750lb. Performance specs included a maximum speed of 190 miles-per-hour, a cruising speed of 177 mph, a range out to 930 miles, and a service ceiling of 20,000 feet. Rate-of-climb reached 1,315 feet-per-minute.

If armed, the T-25 was cleared to carry 2 x 7.62mm machine gun pods on two external hardpoints.

The T-25 went on to lead a healthy and long service life in the Brazilian Air Force. The service even thought enough about their homegrown product to operate it as a COunter-INsurgency (COIN) platform and armed it for the low-level role. Beyond its basic training role, this sort of modification showcased the T-25's inherent versatility.

It was the Chilean Army, not Air Force, that took an interest in the T-25 and ordered ten examples. These later fell to the Chilean Air Force before ending their journey with Paraguay. With the arrival of the Embraer EMB-312 'Tucano' trainer-light strike platform in the early 1980s, the T-25's time in the air was numbered. In 2005, the Brazilian Air Force, already having committed to the Tucano in 1983, delivered to Bolivia and Paraguay and six T-25 aircraft apiece.

The YT-25B ('Universal II') was proposed as a suitable successor for the original T-25A but was not followed-up on. This prototype recorded its first-flight on October 2nd, 1978.

Content ©MilitaryFactory.com; No Reproduction Permitted.
Operators
Global customers who have evaluated and/or operated the Neiva T-25 (Universal). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 189 Units

Contractor(s): Neiva - Brazil
National flag of Bolivia National flag of Brazil National flag of Chile

[ Bolivia; Brazil; Chile; Paraguay ]
Going Further...
The Neiva T-25 (Universal) Basic Trainer / Light Attack Aircraft appears in the following collections:
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