74、Fire seals are those fire-resistant partitions and seals mounted on or about the power package for the purpose of isolating areas subject to fire.

149、Make sure that the doors are closed during the pressurization test.

148、It is not permitted to install more than two washers for each bolt

147、In this example,we calculated the data applicable only to a Type unit.

146、In these conditions, the mechanical and electrical pitch trim systems will not operate.

145、In the latter case, the title shall be Pilot＇s Operating Handbook"."

144、If the tower does not respond, use a different channel.

143、If the bracket touches the plate,remove the unwanted material with file.

142、If possible, always tell your reader what can occur if the safety instruction is not obeyed.

141、Ground service bus has no power with external power available.

140、Fault isolation provides the information used to identify,locate and correct any fault that is predicted to occur on theairplane.