(a) During the engine runs for maintenance which position you near the engine (such as during a minimum idle leak check), enter and exit the engine fan case area in the entry/exit corridor.

 (b) Use of a safety lanyard, inlet barrier or inlet guard is recommended for your safety.

 (5) Obey the following precautions about engine cool down.
 WARNING : DO NOT TRY TO STOP FAN FROM TURNING BY HAND. THIS CAN CAUSE
_______ INJURY TO THE PERSONS AND DAMAGE TO THE EQUIPMENT.
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 (a) After engine operation, make sure the turbine exhaust sleeve and plug become sufficiently cool before maintenance is done in these areas.

 (b) The other parts of the engine can with no danger of burns.

 (6) Obey the following precautions about engine noise (Ref. Fig. 504/TASK 71-00-00-991-300)
 (a) You can temporarily cause your ears to become less sensitive to sound if you listen to loud engine noise.

 (b) You can become permanently deaf if you listen to the engine noise for a long time.

 (c) When you are near an operating engine, always use ear protection to decrease the quantity of sound energy which reaches your ears.

 NOTE : The use of cup-type ear protection is recommended.
____
 (7) Obey the following precautions about the engine ignition system.
 WARNING : THE ENGINE IGNITION SYSTEM IS AN ELECTRICAL SYSTEM WITH
_______ HIGH ENERGY. YOU MUST BE CAREFUL TO PREVENT ELECTRICAL SHOCK. INJURY OR DEATH CAN OCCUR TO YOU. DO NOT DO MAINTENANCE ON THE IGNITION SYSTEM WHEN YOU OPERATE THE ENGINE.
 (a) Open the circuit breakers for the ignition system to deactivate the ignition system.

 (b) Make sure that the engine 1(2) shutdown occured a minimum of 5 minutes before you proceed.

 (8) Obey the following precautions about the engine fuel and lubrication oils.

 (a) All the fuels, lubrication oils, and hydraulic fluids will make your skin dry. Do not let these fluids touch your skin.

 (9) Obey the following precautions about the cowl doors.

 WARNING : DO NOT DO AN ENGINE RUN-UP WITH THE THRUST REVERSER COWLS
_______ OPEN. DO NOT DO AN ENGINE RUN-UP WITH THE FAN COWLS OPEN AND SAFETIED BY THE HOLD-OPEN ROD IF YOU OPERATE THE ENGINE AT POWER HIGHER THAN IDLE.
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 Engine accoustical Hazard Areas Figure 504/TASK 71-00-00-991-300- 12 (SHEET 1)
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 Engine accoustical Hazard Areas Figure 504/TASK 71-00-00-991-300- 22 (SHEET 2)
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_______ OPEN OR CLOSE THE DOORS OR INJURIES CAN OCCUR IF THE DOORS CLOSE SUDDENLY.
 (a) Make sure that the cowl door hold-open rods are extended and attached to the engine if the cowl doors are opened for maintenance actions when the engine is run.
 (10) Change core or fan speed from percentage to actual RPM.
 (a) Use the chart given in the figure to change core or fan speed from percentage to actual RPM (Ref. Fig. 505/TASK 71-00-00-991-308)
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 Fan Speed and Core Speed, Percent Vs RPM Figure 505/TASK 71-00-00-991-308
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 TASK 71-00-00-710-001
 Dry Motoring Check
 WARNING : MAKE SURE THAT ALL ENGINE OPERATING AREAS ARE AS CLEAN AS POSSIBLE.
_______ ALL RAMPS, TAXIWAYS, RUNWAYS AND OTHER OPERATING AREAS MUST BE VERY CLEAN TO PREVENT BAD DAMAGE TO THE ENGINE, AIRCRAFT AND PERSONS IN THE AREA.
 WARNING : DO NOT TRY TO STOP FAN FROM TURNING BY HAND. THIS CAN CAUSE INJURY TO
_______
 THE PERSONS AND DAMAGE TO THE EQUIPMENT.

 WARNING : MAKE SURE THAT THE LANDING GEAR GROUND SAFETIES AND THE WHEEL CHOCKS
_______
 ARE IN POSITION.

R WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______ R CLEAR BEFORE YOU MOTOR THE ENGINE. MOVEMENT OF THE FLIGHT CONTROL R SURFACES CAN BE DANGEROUS AND/OR CAUSE DAMAGE.
　
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