N73999 (civil-registered prototype)

E1763718 UNEXPLORED

N73999 is a civil-registered prototype helicopter airframe used in the development and testing of the Bell YOH-4 light observation helicopter.

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N73999 (civil-registered prototype) canonical 1

Referenced by (1)

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

Bell YOH-4 → tailNumberExample → N73999 (civil-registered prototype) ⓘ