CAA CAP 594-1991
航空事故调查部门(AAIB)建议:答复AAIB建议的1991 CAA进度报告
Air Accidents Investigation Branch (AAIB) Recommendations: Progress Report 1991 CAA Responses to AAIB Recommendations Received up to 31 May 1991, presented to the Secretary of State for Transport May 1991 First edition; Reprinted May 2002