Aircraft Flight Operation Regulations Article 126
All aircraft intended to be operated above 49,000 ft. shall carry equipment to measure and indicate continuously the dose rate of total cosmic radiation being received and the cumulative dose on each flight. The display unit of the equipment shall be readily visible to a flight crew member.
中文原文 航空器飛航作業管理規則第126條
航空器飛航高度超過四萬九千呎者，應於駕駛艙內備有測量宇宙間輻射量之裝置，並顯示每次飛航累積之輻射量，提供飛航組員檢視。