- 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.

 CAUTION : DO NOT REPLACE AN IDLE LEAK CHECK BY A MOTORING TEST. YOU CAN NOT
_______ DETECT POTENTIAL OIL LEAKS WITH A MOTORING TEST. IF YOU DO A MOTORING TEST INSTEAD OF AN IDLE LEAK CHECK, AN ENGINE SHUTDOWN COULD RESULT.
 CAUTION : MAKE SURE THAT THERE IS NO HYDRAULIC GROUND POWER SUPPLY CONNECTED TO
_______ THE AIRCRAFT WHEN YOU DO THIS PROCEDURE. IF A GROUND POWER SUPPLY IS CONNECTED, THERE IS A RISK OF DAMAGE TO THE ENGINE PUMPS.
 1. Reason for the Job
__________________
 It is necessary to do a dry motoring check during or after inspection or maintenance. The dry motoring check makes sure that the engine will turn freely and that the instruments operate correctly, and that the operation of the starter obeys the speed requirements for correct starts. You can use the dry motoring to dry the remaining fuel that can collect in the combustion chamber or the lower section of the turbine casing.
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 2. Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-13-79-610-002 Check oil level and replenish Check Pop Out Indicator
 of EMCD (Electrical Master Chip Detector) 12-13-79-610-002 Check oil level and replenish (Pressure Filling) 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
 External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
 from the External Power 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure 36-12-00-860-001 Pressurization of the Bleed System with the APU 36-12-00-860-002 Pressurization of the Bleed System through the HP
 Ground Connector
R 71-00-00-790-002 Fuel or Hydraulic or Oil Leakage Limits 71-00-00-869-003 Wind Limitations During Engine Ground Operations 71-00-00-869-004 Safety Precautions During Engine Ground Operations 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 78-30-00-081-041 Make the Thrust Reverser Serviceable after
 Maintenance
 78-30-00-481-041 Make the Thrust Reverser Unserviceable for

 Maintenance
 78-36-00-010-040 Opening of the Thrust Reverser Doors
 78-36-00-410-040 Closing of the Thrust Reverser Doors
 79-00-00-210-003 Visual Inspection of the Oil System

 3. Job Set-up
__________
 Subtask 71-00-00-869-088
 A. Preparation for test
 (1) Obey the wind limitations and safety precautions during engine ground operations (Ref. TASK 71-00-00-869-003) and (Ref. TASK 71-00-00-869-004).

 (2) Make sure that the engine inlet and exhaust covers are removed. Make sure that these areas are clear of unwanted objects.

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 (3) Make a visual check of the temperature sensors, fan inlet, and exhaust areas. If snow or ice has collected in the fan duct, make sure that the fan turns freely. Also, make sure that the engine inlet, inlet lip, fan, spinner, and fan exhaust duct are clear of ice or snow. If the fan does not turn freely, you must melt the snow or ice with hot air before an engine operation.

 (4) Look at the general condition of the fan spinner and fan blades, core exhaust nozzle, LPT and external surfaces of the cowls.

 (5) Do a check of the oil quantity. Make a check of the drain ports for fuel, oil and hydraulic leaks (Ref. TASK 71-00-00-790-002). Also make sure that fuel drained from the engine does not cause a fire.

 Subtask 71-00-00-010-060
 B. Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
 FOR 1000EM1
 437AL, 438AR
 FOR 1000EM2
 447AL, 448AR

 Subtask 71-00-00-040-054
 C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
 Subtask 71-00-00-010-065
 D. Open the thrust-reverser doors to the 35 degrees position (Ref. TASK 78-36-00-010-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
 Subtask 71-00-00-861-058
　
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