Engine Physical Hazard Areas - Minimum Idle
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 Engine Physical Hazard Areas - Takeoff Thrust
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 Engine Physical Hazard Areas - Takeoff Thrust Figure 503B/TASK 71-00-00-991-304-B
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 **ON A/C ALL
 (a) Persons positioned near the power plant during power plant operation must be aware of the hazard areas aft of the inlet cowl lip.
 1 This area extends completely around the outer diameter and to
_ the forward end of the power plant.
 2 At idle power, the hazard areas start about four feet aft of
_
 the inlet cowl lip.

 3 At above idle power, the hazard areas start about five feet
_
 aft of the inlet cowl lip.

 4 If the surface wind is more than 25 knots, increase the
_ distance of the hazard area by 20 percent.
 5 If the ramp surfaces are wet or frozen, make the ramp clean to
_
 prevent injury to persons.

 6 After the engine is shutdown, let the engine spool down before
_
 the air inlet is approached.

 (b) Make sure that persons that do not know of the hazard areas near the power plant cannot go in these areas.
 WARNING : ALL PERSONS MUST STAY OUT OF THE DANGEROUS AREAS AROUND
_______ THE AIR INLET. ALL PERSONS MUST STAY AWAY FROM THE ENGINE SAFETY BARRIER WHEN THE ENGINE IS OPERATED. DURING ENGINE OPERATION, THERE IS SUFFICIENT SUCTION AT THE AIR INLET TO PULL A PERSON INTO THE INLET. A FATAL INJURY COULD OCCUR.
 WARNING : THE SUCTION NEAR THE AIR INLET CAN PULL IN HATS,
_______ GLASSES, LOOSE CLOTHING AND WIPE RAGS FROM YOUR POCKETS. ALL LOOSE OBJECTS MUST BE REMOVED BEFORE YOU WORK AROUND THE ENGINE.
 1 When the engine operates, it makes a low air pressure area in
_ the inlet. This low pressure area causes a large quantity of air to move from the forward side of the inlet cowl and go into the engine.
 2 The air which is near the inlet moves at a much higher
_ velocity than air which is farther from the inlet.
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 F 『 E C F M E E E E 56-5B E E E 3 The quantity of the engine suction does not increase slowly

_ and continuously when you go near the inlet.
 4 The suction is small until you get near the inlet, where the
_
 suction increases suddenly.

 5 The engine suction can pull small objects into the engine
_
 easier than it can pull large objects.

 (c) Before you operate the engine, do these steps:
 WARNING : MAKE SURE THAT:
_______
 - THE PASSENGER DOORS ARE CLOSED AND THE PASSENGER LOADING STAIRS ARE REMOVED WHEN AT LEAST ONE ENGINE IS OPERATED ABOVE IDLE POWER.

 - THE CARGO DOORS ARE CLOSED AND CARGO LOADING EQUIPMENT IS REMOVED WHEN: . ENGINE 2 IS OPERATED AT IDLE OR ABOVE . AT LEAST ONE ENGINE IS OPERATED ABOVE IDLE POWER IF YOU DO NOT OBEY THESE PRECAUTIONS INJURY TO THE PERSONNEL AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT CAN OCCUR.

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

 CAUTION : - SEE THE APPLICABLE FIGURE FOR WIND LIMIT RESTRICTIONS
_______
 WHEN THE ENGINE OPERATES.

 - NATURAL WINDS AND IRREGULAR FORCES FROM SUDDEN GUSTS INCREASE THE DANGEROUS AREA.

 - DO NOT GO ABOVE OPEN COWLING LIMITATIONS WHEN YOU DO THE TESTS.

 - THE OPERATOR MUST FULLY KNOW ALL THE OPERATING LIMITS AND PROCEDURES BEFORE ENGINE OPERATES.

 1 Make sure there are no tools, unwanted materials or objects in
_
 the air inlet.

 2 Make sure the area 40 ft. (12 m) to each side and forward of
_
 the engine is clean.

 3 Make sure the ground which is forward of the engine is strong
_
 and solid.

 4 Make sure the suction of the engine will not pull the unwanted
_ material on the ground into the engine.
　
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