40 FEET
9 FEET (12 METERS)
(2.7 METERS)
_______WARNING: KEEP ALL PERSONS OUT OF THE DANGEROUS
AREA DURING ENGINE OPERATION. IF THE
SURFACE WIND IS MORE THAN 25 KNOTS,
INCREASE THE DANGEROUS AREA AT THE
ENGINE INLET BY 20 PERCENT.
CLEAN THE RAMP IF THERE IS SNOW, ICE,
WATER, OIL OR OTHER CONTAMINATION,
OR MOVE THE AIRPLANE TO A LOCATION
THAT IS CLEAN.
MAKE SURE THAT ALL PERSONS ARE SAFE
BEFORE YOU START THE ENGINE.
MAKE SURE THE PERSONS IN THE FLIGHT
COMPARTMENT CAN SPEAK TO ALL PERSONS
NEAR THE DANGEROUS AREA DURING ENGINE
OPERATION.
OBEY ALL OF THE GROUND SAFETY PRE-
CAUTIONS FOR THE ENGINES.
THE ENGINES CAN PULL PERSONS OR UN-
WANTED MATERIALS INTO THEM AND CAUSE
INJURIES TO PERSONS OR DAMAGE TO
EQUIPMENT.
NOTE:_____ THE DANGEROUS AREA IS SHOWN FOR THE
RIGHT ENGINE ONLY. THE DANGEROUS
AREA AROUND THE LEFT ENGINE HAS THE
SAME DIMENSIONS. WHEN YOU OPERATE
18 FEET TWO ENGINES, THE DANGEROUS AREA IS
(5.5 METERS) THE SUM OF THE LEFT AND RIGHT
D DANGEROUS AREAS.
FORWARD THRUST AT TAKEOFF POWER
Engine Inlet and Exhaust Hazard Areas
Figure 201 (Sheet 4)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
HAZARD AREA
EXAMPLE-OUTBOARD ENGINES HAZARD AREA WARNING:_______ DURING ENGINE OPERATION. IF THE SURFACE PERCENT. DANGEROUS AREA AT THE ENGINE INLET BY 20 WIND IS MORE THAN 25 KNOTS, INCREASE THE KEEP ALL PERSONS OUT OF THE DANGEROUS AREA
CLEAN THE RAMP IF THERE IS SNOW, ICE, WATER, OIL OR OTHER CONTAMINATION, OR MOVE THE AIRPLANE TO A LOCATION THAT IS CLEAN.
YOU START THE ENGINE. MAKE SURE THAT ALL PERSONS ARE SAFE BEFORE
DANGEROUS AREA DURING ENGINE OPERATION. MENT CAN SPEAK TO ALL PERSONS NEAR THE MAKE SURE THE PERSONS IN THE FLIGHT COMPART-
FOR THE ENGINES. OBEY ALL OF THE GROUND SAFETY PRECAUTIONS
PERSONS OR DAMAGE TO EQUIPMENT. MATERIALS INTO THEM AND CAUSE INJURIES TO THE ENGINES CAN PULL PERSONS OR UNWANTED
REVERSE THRUST AT MINIMUM IDLE POWER
Engine Inlet and Exhaust Hazard Areas
Figure 201 (Sheet 5)
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C. Thrust Lever Movement
NOTE: A deterioration of the performance can occur if the gaspath seal
____ clearance increases. The clearance will increase if the gaspath seal is worn from high temperature changes which occur during fast thrust changes. To decrease the area of the turbine seal which wears, slowly increase or slowly decrease the thrust with a smooth thrust lever movement if it is possible.
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