The I-11 was a two-seat civil utility aircraft manufactured in

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

in the 1950s. Originally designed by the Spanish aircraft company Iberavia, its first (of two) prototype flew on 16 July

1951 Events January * January 4 – Korean War: Third Battle of Seoul – Chinese and North Korean forces capture Seoul for the second time (having lost the Second Battle of Seoul in September 1950). * January 9 – The Government of the Uni ...

. It was a low-wing

monoplane A monoplane is a fixed-wing aircraft configuration with a single mainplane, in contrast to a biplane or other types of multiplanes, which have multiple wings. A monoplane has inherently the highest efficiency and lowest drag of any wing con ...

of conventional configuration with fixed, tricycle

undercarriage Undercarriage is the part of a moving vehicle that is underneath the main body of the vehicle. The term originally applied to this part of a horse-drawn carriage, and usage has since broadened to include: *The landing gear of an aircraft. *The ch ...

and a large,

bubble canopy A bubble canopy is an aircraft canopy constructed without bracing, for the purpose of providing a wider unobstructed field of view to the pilot, often providing 360° all-round visibility. The designs of bubble canopies can vary drastically; so ...

over the two side-by-side seats. Flight characteristics were found to be pleasing, but before plans could be made for mass production, Iberavia was acquired by AISA. The new management decided to continue with development, but made a few changes to the design, reducing the size of the canopy, and replacing the undercarriage with a

taildragger Conventional landing gear, or tailwheel-type landing gear, is an aircraft undercarriage consisting of two main wheels forward of the center of gravity and a small wheel or skid to support the tail.Crane, Dale: ''Dictionary of Aeronautical Term ...

arrangement. This configuration entered production in

1952 Events January–February * January 26 – Cairo Fire, Black Saturday in Kingdom of Egypt, Egypt: Rioters burn Cairo's central business district, targeting British and upper-class Egyptian businesses. * February 6 ** Princess Elizabeth, ...

with an order from the Director General for Civil Aviation for 70 aircraft for use in Spain's aeroclubs. The

Spanish Air Force The Spanish Air and Space Force () is the aerial and space warfare branch of the Spanish Armed Forces. History Early stages Hot air balloons have been used with military purposes in Spain as far back as 1896. In 1905, with the help of Al ...

then ordered 125 for use in

training Training is teaching, or developing in oneself or others, any skills and knowledge or fitness that relate to specific useful competencies. Training has specific goals of improving one's capability, capacity, productivity and performance. I ...

and liaison roles. The Air Force then requested 200 aircraft built with the seats in tandem, which were designated I-115 by the manufacturers powered by a 112 kW (150 hp) ENMA Tigre inverted air-cooled engine.

Variants

;I-11: 2 prototypes by Iberavia, tricycle undercarriage ;I-11B: Production examples by AISA ;

AISA I-115 The AISA I-115 is a low-wing single-engined military trainer (aircraft), primary trainer with tandem seating, which went into service with the Spanish Air Force in 1956. After retirement in 1976 many were sold to civil operators. Development Th ...

: Tandem-seat version.

Operators

; *

Specifications (I-11B)

References

* * * *
Fundació Aeronàutica Mallorquina website
{{Spanish liaison aircraft I-011 Single-engined tractor aircraft Low-wing aircraft 1950s Spanish civil utility aircraft Aircraft first flown in 1951 Aircraft with fixed conventional landing gear Single-engined piston aircraft