Hoverfly I

E2102076 UNEXPLORED

Hoverfly I was the Royal Air Force’s designation for the Sikorsky R-4, the world’s first mass-produced helicopter used operationally during World War II.

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All labels observed (1)

Label	Occurrences
Hoverfly I canonical	2

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Sikorsky R-4 → RAFDesignation → Hoverfly I ⓘ

Sikorsky Hoverfly → hasDesignation → Hoverfly I ⓘ