A red mark on the pin identifies the lubrication point.

A. Substitutes with different quality can be used.

B. You can not use substitutes with same quantity.

C. Equivalent substitutes are permitted to use.

A. The airworthiness and safe operation of an airplane is assured if it＇s used as its original design purpose, properly inspected and carefully maintained.

B. The manufacturer is intended to utilize an airplane with sound inspection and maintenance practices because that is the basis for assuring the airplane remains airworthy and safe to operate.

C. The airplane is designed to be used as the manufacturer＇s intention. Users shall properly inspect the airplane and do sufficient maintenance to assure its airworthiness and operation safety.

A. Check all parts with clear defects in accordance with standard industry practices.

B. Check all parts for visible defects in accordance with standard industry practices.

C. Check all parts for serious defects in accordance with standard industry practices.

A. Obtain approval from the design authority after making any changes to this repair procedure.

B. Prior to modifying this repair procedure, obtain the approval of the design authority.

C. Ensure that the design authority approves nonessential alterations made to this repair procedure.

A. Use the marks on the bellcrank and shaft to identify them and prevent incorrect installation.

B. Mark the bellcrank and shaft so that they＇ll be identified and incorrect installation will not occur.

C. Put marks on the bellcrank and shaft or incorrect installation will occur.

A. Mark and protect the parts and then remove the parts.

B. Mark and protect the parts that are removed.

C. Mark and protect the parts that will be removed.

A. Ignore the absence of contamination in the fuel sample and continue with the procedure.

B. Continue with the procedure if the fuel sample does not exhibit any contamination.

C. Proceed with the procedure regardless of any contamination found in the fuel sample.

A. Use the tube if it＇s worked into 3.3 feet long.

B. Use a tube whose length is 3.3 feet.

C. The tube which is used is 3.3 feet length.

A. Pilots have more opportunity to move stabilizer to nose up position during takeoff thanks to the mach trim actuator who commands elevator to a more nose down position.

B. During takeoff, pilots have more opportunity to move elevator to nose up position thanks to the mach trim actuator who commands stabilizer to a more nose down position.

C. During takeoff, pilots have more opportunity to move elevator to nose down position thanks to the mach trim actuator who commands stabilizer to a more nose up position.

A. If a supply shutoff valve was closed within five minutes, no maintenance performance is needed and shutoff periods are not accumulated.

B. Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.

C. When a supply shutoff valve was closed for five minutes, maintenance action is hardly required and shutoff duration are not included.