In the description of the airplane＇s Heating, Ventilating, Defrosting and Air-Conditioning Systems, how to get maximum benefit using the controls provided shall be explained.

Shutoff the airflow in the air conditioning ducts to be inspected.

The surge tank drain check valve also prevents fuel flow from main tank 1 and main tank 2 to the surge tank.

The writing rules cover aspects of grammar and style. The dictionary gives the general words that a writer can use.

The symbol means all or most of the rules in that section.

This index helps you find the applicable STE rules related to different specific subjects.

During the APU operation, examine the oil temperature sensor for signs of oil leakage.

The system must be deactivated in order to prevent the thrust reverser from operating accidentally.

Make sure the girt bar is not engaged in the floor-mounted escape slide brackets.

He removed the access panel to see the corroded tube.

It is a must to check the relevant pump when metal chips are found.