English: The Airco D.H.9 (from de Havilland 9) also known after 1920 as the de Havilland D.H.9 was a British bomber used in the First World War. The D.H.9A was a redesign with greater wing span and a more powerful and reliable engine.
This category has the following 3 subcategories, out of 3 total.
Media in category "Airco DH.9"
The following 27 files are in this category, out of 27 total.