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________ Subtask 72-21-00-869-070
 A. Make sure that the work area is clean and clear of tool(s) and other items.
 Subtask 72-21-00-942-069
 B. Close Access
 (1) Remove the access platform(s).

 (2) Remove the warning notice(s).

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 TASK 72-21-00-320-004
 Blending of the Stage 1 Booster Vane Assembly
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific soft file
 No specific warning notice
 No specific access platform 0.5 m (1 ft. 8 in.)

 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2189 *
 durite G422 (Ref. 70-30-00)
 Material No. CP2191 *
 durite G421 (Ref. 70-30-00)

 C. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
70-51-00-230-002 Fluorescent-Penetrant Inspection-Portable-Water
 Washable
 72-21-00-000-007 Removal of the Fan Rotor Blades
 72-21-00-400-007 Installation of the Fan Rotor Blades

R 72-21-00-991-330 Fig. 806
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 3. Job Set-up
__________
 Subtask 72-21-00-941-076

 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). 1(2).

 (4) Put an access platform in position.

 4. Procedure
_________ R (Ref. Fig. 806/TASK 72-21-00-991-330) Subtask 72-21-00-020-074
 A. Remove the Fan rotor blades (Ref. TASK 72-21-00-000-007).
 Subtask 72-21-00-220-055

 B. Check for dimensions and location of defects on edge and compare with
 repair limits. R (Ref. Fig. 806/TASK 72-21-00-991-330)
 Subtask 72-21-00-320-053
 C. Perform blending of defects using a soft file or strips of durite G422 (Material No. CP2189) or durite G421 (Material No. CP2191), used dry.
 (1) Remove a minimum of 0.01 in. (0.25 mm) of base metal in addition to depth of defect.
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R  Blending of a Stage 1 Vane Assembly Leading Edge Figure 806/TASK 72-21-00-991-330
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 D. Fluorescent penetrant inspect reworked area (Ref. TASK 70-51-00-230-002). No crack is allowed.
 5. Close-up
________ Subtask 72-21-00-420-078
 A. Install the fan rotor blades (Ref. TASK 72-21-00-400-007). Subtask 72-21-00-869-071
 B. Make sure that the work area is clean and clear of tool(s) and other items.
 Subtask 72-21-00-942-070
 C. Close Access
 (1) Remove the access platform(s).

 (2) Remove the warning notice(s).

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