AISA — Aeronáutica Industrial S.A.
Aeronáutica Industrial S.A. — universally known as AISA — was a Spanish aircraft manufacturer based in Madrid. Founded in the 1920s, the company became Spain's foremost producer of light training and touring aircraft, supplying both the Spanish Air Force and civil aviation clubs over several decades. AISA's lineage traces directly to the pioneering work of engineer González Gil-Pazó, whose pre-war trainer designs formed the foundation of the company's post-war production programme.
González Gil-Pazó Pre-War Designs
- González Gil-Pazó No. 1 (1931) — Tandem two-seat low-wing trainer; the founding design of the AISA lineage
- González Gil-Pazó GP-1 (1934) — Development of the No. 1 with improved fuselage and wing; 100 ordered by the Spanish Republican Air Force, but only 40 built due to the outbreak of the Spanish Civil War
- González Gil-Pazó GP-2 (1935) — GP-1 with enclosed cockpit and modified fuselage
- González Gil-Pazó GP-4 — Further development of the GP series
INTA / Iberavia Transitional Designs
- INTA HM.1 (1943) — Tandem two-seat low-wing trainer; also known as the Huarte Mendicoa HM-1 after its designer; a key transitional design bridging the pre-war and post-war eras
- Iberavia I-11 (1951) — Single-engine trainer and touring aircraft with fixed tricycle undercarriage and side-by-side seating; two prototypes built
AISA Production Aircraft
- AISA I-11B (1952) — AISA production version of the Iberavia I-11; features a smaller canopy and tailwheel undercarriage; operated by civil aviation clubs and the Spanish Air Force
- AISA I-115 “E-6” (1950s) — I-11B variant with revised fuselage for tandem seating; primary trainer variant used by the Spanish Air Force under the military designation E-6
- AISA AVD-12 — First flight 18 August 1954
Later Developments
- AISA GN (1982) — Single-engine four-seat autogyro prototype; one example built; a remarkable late-career departure into rotary-wing technology
Primary-source technical documentation for AISA aircraft — including manuals, parts catalogs, and engineering publications — is available in the Spanish Aviation Collection at Online Aviation Library.