chalk n. the personnel and equipment that make up the load of an aircraft. Editorial Note: Almost certainly an extension of a chalk as a record-keeping mark, which dates at least 400 years. (source: Double-Tongued Dictionary)
chalk n. the personnel and equipment that make up the load of an aircraft. Editorial Note: Almost certainly an extension of a chalk as a record-keeping mark, which dates at least 400 years. (source: Double-Tongued Dictionary)
