(2) Close the thrust reverser doors: (Ref. TASK 78-36-00-410-040). FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
Subtask 72-23-00-440-062
B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
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Fan Frame Casing - Rust Removal
Figure 801/TASK 72-23-00-991-313
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C. Close Access
(1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040) FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Remove the access platform(s).
(3) Remove the warning notice(s).
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TASK 72-23-00-300-042 Repair of Fan Duct Panel
1. Reason for the Job
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Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notice
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP5006 * austenite stainless steel wire - 321SS (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
72-23-00-000-027 Removal of the Fan Duct Panels 72-23-00-400-027 Installation of the Fan Duct Panels SPM 70-32-11-23000500 SPM 70-41-11-35000900 SPM 70-45-11-31000200 72-23-00-991-314 Fig. 802
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3. Job Set-up
__________ Subtask 72-23-00-941-082
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 72-23-00-010-092
B. Remove the fan duct panel (Ref. TASK 72-23-00-000-027).
4. Procedure_________ (Ref. Fig. 802/TASK 72-23-00-991-314) NOTE : This repair procedure provides instruction for reconditioning cracked
____
fan duct panels by weld buildup.
Subtask 72-23-00-310-052
A. Stop the crack by drilling a 0.079 in. (2 mm) dia. hole at both ends.
(1) Weld up the crack under argon atmosphere, and using weld wire austenite stainless steel wire - 321SS (Material No. CP5006). (Ref. SPM 70-45-11-31000200).
(2) Check the welded area (Ref. SPM 70-32-11-23000500).
(3) Flush the weld bead (Ref. SPM 70-41-11-35000900).
(4) Perform a fluorescent inspection of the weld bead (Ref. SPM 70-32-11-23000500).
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Fan Duct Panels
Figure 802/TASK 72-23-00-991-314
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________ Subtask 72-23-00-410-086
A. Close Access
(1) Install the fan duct panel (Ref. TASK 72-23-00-400-027).
(2) Make sure that the work area is clean and clear of tool(s) and other items.
(3) Remove the warning notice(s).
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