An XC-142A first flew conventionally on 29 September 1964, and on 11 January 1965, it completed its first transitional flight by taking off vertically, changing to forward flight, and finally landing vertically.
An XC-142A's initial flight was conventional on 29 September 1964, and its first transitional flight involved taking off vertically, transitioning to forward flight, and landing vertically on 11 January 1965.