58. Aircraft maintenance manual or section, which includes at east the following D information introduction information that includes an explanation of the airplane＇s features and data to the extent necessary for maintenance or preventive maintenance.

3、Access doors and panels in a zone are identified by the zone number and a two or three letter suffix. 区域内的门禁门和面板由区域号和两个或三个字母的后缀来标识

2、The airplanes were delivered with recommended inspection programs to keep them airworthy.

1、The properties of these sealants prevent corrosion.