The Curtiss XP-18 was ordered in 1930 and was to have been a single-seat biplane powered by a Wright IV-1560 engine. The design was cancelled before Curtiss constructed any.[1]
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Manufacturer designations |
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Operator and role |
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1 Designation skipped 2 Not built |
1924 sequences (1924–1962) |
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Tri-service sequence (1962–present) |
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Covert designations | |||||||||||
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