by the Civil Aeronautics Board, Civil Air Regulations — Part 40… (1942)
“ Each first pilot within the 6 months immediately preceding his qualification for the route, shall have made one one-way trip without passengers over the proposed route or a part thereof on which he will pilot aircraft for applicant and shall have landed at least once at each terminal, scheduled intermediate stop, and intermediate field. If landings cannot be effected at each intermediate field, the pilot shall make a ground examination, or where impracticable by reason of field conditions, a visual examination from the air at a safe low altitude, of each such field on which no landing is made. ”
