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_________ Subtask 72-00-00-210-072
A. Visual Inspection
(1) Look for possible damage to the spinner front and rear cones (Ref. TASK 72-21-00-210-005).
(2) Examine the general condition of the fan rotor blades (Ref. TASK 72-21-00-210-009).
(3) Look for possible damage to the fan forward acoustical panels (Ref. TASK 72-23-00-210-004).
(4) Through the fan rotor blades, look for possible damage to: NOTE : If necessary, (dim lighting conditions) use an electric torch
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(flashlight).
(a) The leading edge of fan outlet guide vanes (OGVs),
(b) Splitter fairing,
(c) Fan mid acoustical panels (located between the fan rotor blades and the OGV assembly), (Ref. TASK 72-23-00-210-004).
5. Close-up
________ Subtask 72-00-00-869-074
A. Put the aircraft back to its initial configuration.
(1) Remove the rubber mat, or equivalent floor protection from the powerplant inlet cowl.
(2) Make sure the inlet cowl area is clean and clear of tool(s) and other items.
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ECES E TASK 72-00-00-280-002 Monitor the Engine EGT for Possible Engine Performance Deterioration
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1. Reason for the Job
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PRE SB CFM56-5B 72-182 This TASK is applicable for /P engines. POST SB CFM56-5B 72-182 After SB CFM56-5b 72-182 is done with the 2D stage 9 blades, this TASK is no longer needed.
2. Job Set-up Information
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A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 TSM 77000081084900
3. Job Set-up
__________ Subtask 72-00-00-861-054
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 72-00-00-869-085
B. Get the engine takeoff EGT data, with the use of the MCDU or DAR/QAR data.
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4. Procedure
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Subtask 72-00-00-280-065
A. Do this procedure to get engine EGT trend information.
(1) Takeoff EGT data must be recorded and evaluated as follows:
(a) Once each month during usual conditions.
(b) Once each week if the calculated EGT margin (see EGT Calculation Procedure paragraph) becomes 20 deg.C (36.00 deg.F), or less.
(c) Once each day if the calculated EGT margin (see EGT Calculation Procedure paragraph) becomes 10 deg.C (18.00 deg.F), or less.
(d) The next flight immediately after an unusual condition that can cause engine deterioration such as:
1 a bird strike,
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2 other unwanted materials that have gone into the engine,
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3 engine vibration advisory warning.
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(2) After an unusual condition, if the data shows an EGT margin more than the 20 deg.C level, examine the data once each month. After an unusual condition, if the data shows an EGT margin between the 10 deg.C and 20 deg.C levels, examine the data once each week.
Subtask 72-00-00-970-050
B. EGT Calculation Procedure
(1) Do the procedure that follows to calculate the EGT margin.
(a) Use the CFMI trend monitoring programs (GEM or ADEPT) and process the recorded takeoff data.
(b) Calculate 5B/P EGTMARGIN as follows: EGTMARGIN=EGTMAR+EGTADJ where: EGTMAR=EGT margin output from GEM or ADEPT and EGTADJ=adjustment shown in Table as compared to engine rating
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