Spain Selects Airbus A321 for Santiago II SIGINT Aircraft

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Published: October 7, 2026

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First reported by: The Aviationist

Spanish Air and Space ForceAirbus Defence and SpaceIndraMinistry of Defence SpainSantiago II programRevista de Aeronáutica y Astronáutica

In brief

Spain has chosen the Airbus A321 as the platform for three new manned SIGINT aircraft under the Santiago II program to restore airborne intelligence capability.

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Spain is restoring a dedicated manned airborne signals intelligence capability through the Santiago II program by selecting the Airbus A321 as the platform for three new aircraft. The decision was revealed in the latest issue of the Spanish Air and Space Force official magazine Revista de Aeronáutica y Astronáutica. Airbus and Indra are already executing an 18-month conceptual definition study under a contract awarded in November 2025.

Program Background and Objectives

The Santiago II initiative forms part of Spain’s broader Santiago joint SIGINT system for the armed forces. It aims to…

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