474、A pressurized system can cause injury to persons when they do work on it.

849、In the alternative, the acronym CAP may be used

848、If you do not safety the door it is possible that strong winds will cause damage to the structure.

847、If you can not engage the rod and the piston, the length of the new rod is possibly incorrect

846、If this maneuver cannot be performed safely, a warning against attempting it shall be provided.

845、If the RAT is retracted, slowly and fully extend the RAT and make sure that it does not touch other parts.

844、If the format parameter or rule is inappropriate to the type of airplane, equivalents likely to achieve the same Objectives may be used

843、If the error is more than 5deg, calibrate the compass.

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

841、Hydraulic fluid is dangerous for your eyes.

840、Extend and retract the actuator through three full cycles.