THE F.XII is the outcome of the demand for a three‐engined aeroplane ranging in size between the three‐engined F.VIIb‐3m. and the F. IX.
(1931), "The Latest Fokker: A Full Description of the F.XII Operated on the Amsterdam‐Batavia Line", Aircraft Engineering and Aerospace Technology, Vol. 3 No. 4, pp. 97-98. https://doi.org/10.1108/eb029388
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