Each generation of Museum staff and volunteers has inherited aircraft in different conditions and faced different choices about how they should be preserved and presented. Those choices have changed as research, conservation standards, facilities, and interpretive goals have evolved.

The Museum’s initial location was inside the Food and Beverage Building, and as this photo from 1963 shows, the Museum’s early collection was still small. 

Aircraft entered the collection in widely varying conditions. Some arrived incomplete or deteriorated, while others had been altered through military service, civilian use, previous repairs, or years of outdoor display. Certain aircraft were represented only by surviving components, technical drawings, photographs, and other documentary evidence. Before a project could proceed, staff and volunteers had to determine what remained original, how the aircraft had changed, which period of its history should guide the work, and how much intervention was appropriate. These decisions affected the long-term preservation of the collection, the aircraft presented to visitors, and the historical interpretations the Museum offered.

After only a few years, the Museum's collection outgrew its original home and moved to the larger Electric Building across the Prado in Balboa Park.

The work took several forms. Some projects conserved original material and stabilized it against further loss. Others restored surviving aircraft to a selected historical configuration. Still others reconstructed missing portions or created full-scale reproductions when an original example was unavailable or no longer survived. These distinctions mattered. An original aircraft retained material evidence of its manufacture, use, modification, and age. A restored aircraft combined that evidence with documented later intervention. A reproduction served a different purpose by making an important design visible and understandable when the original could not be displayed. Across the Museum’s history, each approach contributed to preserving and interpreting aviation history, but each did so differently.  Those distinctions became especially important after the 1978 fire, when rebuilding the Museum also meant rebuilding much of its aircraft collection.

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