TASK 72-41-22-200-001-B00 HP Compressor Stage 7 Stator Vane - Examine, Inspection-001

DMC:V2500-A0-72-41-2207-00B-300A-C|Issue No:006.00|Issue Date:2019-11-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 72-41-22-200-001-B00 HP Compressor Stage 7 Stator Vane - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

02-150

6A4215

02-150

6A7426

02-150

6A7483

02-350

6A4216

02-350

6A7427

02-350

6A7484

02-350

6A8770

02-400

6A4213C01

02-400

6A7425C01

02-400

6A7485C01

02-400

6A8768

02-448

6A4213C01

02-448

6A7425C01

02-448

6A7485C01

02-448

6A8768

02-450

6A4213C02

02-450

6A7425C02

02-450

6A7485C02

02-450

6A8769

General

This TASK gives the procedure for the inspection of the HP Compressor Stage 7 stator vanes.

Nicks and dents 0.005 in. (0.13 mm) or less are acceptable without limit to the airfoil and gas washed surfaces of the platforms.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For service bulletin variants refer to the IPC.

The policy that is necessary for inspection is given in SPM TASK 70-20-01-200-501.

All the parts must be cleaned before any part is examined (CLEANING-000).

All the parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

The procedure for those parts which must have a crack test is given in Step. Do the crack test before the part is visually examined.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in repair before a discarded part is used again or oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part can be shown to be necessary at a subsequent date.

All the parts must be examined to make sure that all the repairs have been completed satisfactorily.

The practices and processes referred to in the procedure by the TASK/SUBTASK numbers are in SPM.

References

Refer to SPM for data on these items:

Definitions of Damage, SPM TASK 70-02-02-350-501,

Inspection of Parts, SPM TASK 70-20-01-200-501.

Some data on these items is contained in this TASK. For more details on these items refer to SPM:

Method of Test for Crack Indicators,

Chemical Processes,

Surface Protection.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-22-230-090 Examine the Stage 7 Stator Vanes for Cracks

    1. Clean the parts. Refer to TASK 72-41-22-100-000 (CLEANING-000).

      2. Do the test for cracks on the parts that are given below.

        PART IDENT

        TASK/SUBTASK

        Stage 7 Stator Vanes

        1. Cracked.

          1. Airfoil tips.

          1. Refer to Step.

          2. All remaining areas.

          1. Reject.

    2. SUBTASK 72-41-22-220-200-001 Examine the Stage 7 Stator Vanes Concave and Convex Airfoil Surfaces at Locations 1 and 2 (Pre SBE 70-0714 and SBE 70-0726)

    1. Refer to Figure and Figure.

      2. Nicked.

        1. Up to 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than the Step.

        1. Reject.

          NOTE

          A tallysurf measuring instrument can be used, however it is the overhaul shops decision on the equipment they choose.

      3. Dented.

        1. Up to 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      4. Examine the surface finish of the vanes. Use 10 percent of the vanes that have been removed.

        NOTE

        A tallysurf measuring instrument can be used, however it is the overhaul shops decision on the equipment they choose.

        1. Surface finish not more than 30 micro-inches (0.80 micrometers).

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6080 TASK 72-41-22-300-002 (REPAIR-002).

      3. NOTE

        Any vanes which are more than of 30 micro-inches, surface inspection must include all of the vanes which have been removed.

    3. SUBTASK 72-41-22-220-200-002 Examine the Stage 7 Stator Vanes Concave and Convex Airfoil Surfaces at Locations 1 and 2 (SBE 70-0714 and SBE 72-0561)

    1. Refer to Figure and Figure.

      2. Nicked

        1. Up to 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than the Step.

        1. Reject.

      3. Dented.

        1. Up to 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      4. Surface finish.

        1. Surface finish not more than 10 micro-inches (0.25 micrometers) or less.

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6080 TASK 72-41-22-300-002 (REPAIR-002)

    4. SUBTASK 72-41-22-220-201 Examine the Stage 7 Stator Vanes Stop Slot at Location 3

    1. Refer to Figure.

      2. Galled

      1. Reject

      3. Damage.

        1. To the corners of the slot.

        1. Reject.

    5. SUBTASK 72-41-22-220-202 Examine the Stage 7 Stator Vanes Leading and Trailing Edges at Locations 4 and 5

    1. Refer to Figure and Figure.

      2. Nicked

        1. Up to 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Dented.

        1. Up to 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

    6. SUBTASK 72-41-22-220-203 Examine the Stage 7 Stator Vanes Faces at Locations 8 and 9

    1. Refer to Figure.

      2. Galled.

        1. Not more than 0.002 in. (0.05 mm) in depth. This must not be more than 25 percent of the touch area

        1. Accept

        2. Not more than 0.005 in. (0.13 mm) in depth this must not be more than 25 percent of the touch area and not less than 0.0787 in. (2.000 mm) from face 10

        1. Accept

        3. More than in Step or Step.

        1. Reject

    7. SUBTASK 72-41-22-220-204 Examine the Stage 7 Stator Vanes Faces at Location 10

    1. Refer to Figure.

      2. Galled.

        1. Up to 0.006 in. (0.15 mm) in depth, not less than 0.040 in (1.00 mm) away from the land face.

        1. Accept

        2. More than in Step.

        1. Reject

    8. SUBTASK 72-41-22-220-206 Examine the Stage 7 Stator Vanes Airfoil Tips at Location 1057 for Cracks and Rubs

    1. Refer to Figure and Figure.

      2. Cracked.

      1. Repair, VRS6060 TASK 72-41-22-300-004 (REPAIR-004) or Repair, VRS9535 TASK 72-41-22-300-026 (REPAIR-026).

      3. Rubbed.

        1. Tip radius measurement recorded in TASK 72-41-00-040-001-B00 within limits.

        1. Accept.

        2. Vanes identified with radius more than the minimum value in TASK 72-41-00-040-001-B00 or vanes not part of a set.

        1. Repair, VRS6060 TASK 72-41-22-300-004 (REPAIR-004) or Repair, VRS9535 TASK 72-41-22-300-026 (REPAIR-026).

    9. SUBTASK 72-41-22-220-205 Examine the Stage 7 Stator Vanes Cheeks at Locations 11, 12, 13 and 14

    1. Refer to Figure and Figure.

      2. Galled.

        1. Up to 0.015 in. (0.38 mm) in depth. This must not be in an area more than 50 percent of each surface.

        1. Accept

        2. More than in Step.

        1. Reject.

    10. SUBTASK 72-41-22-220-207 Examine the Stage 7 Stator Vanes at Location 1120 and Location 1122

    1. Refer to Figure.

      2. Location 1120.

        1. If the thickness of the land is between 0.0755 in. to 0.0787 in. (1.920 mm to 2.000 mm)

        1. Accept

        2. If the thickness of the land is between 0.0680 in. to 0.0755 in. (1.730 mm to 1.920 mm) over an area of not more than 25 percent

        1. Accept

        3. If the thickness of the land is between 0.0680 in. to 0.0755 in. (1.730 mm to 1.920 mm) over an area of more than 25 percent

        1. Reject

        4. If the thickness of the land is less than the minimum in Step.

        1. Reject

        5. If less than 10 percent reduction in thickness over an areas of less than 25 percent.

        1. Accept

        6. More than in Step.

        1. Reject

      3. Location 1122.

        1. If the thickness of the land is between 0.0755 in. to 0.0787 in. (1.920 mm to 2.000 mm)

        1. Accept

        2. If the thickness of the land is between 0.0680 in. to 0.0755 in. (1.730 mm to 1.920 mm) over an area of not more than 25 percent

        1. Accept

        3. If the thickness of the land is between 0.0680 in. to 0.0755 in. (1.730 mm to 1.920 mm) over an area of more than 25 percent

        1. Reject

        4. If the thickness of the land is less than the minimum in Step.

        1. Reject

        5. If less than 10 percent reduction in thickness over an areas of less than 25 percent.

        1. Accept

        6. More than in Step.

        1. Reject

    11. SUBTASK 72-41-22-220-214 Examine the Stage 7 Stator Vanes Platform (Annulus Surface) at Location 15 (SBE 70-0714 and SBE 72-0561)

      NOTE

      Class identification marks as scores.

    1. Refer to Figure and Figure.

      2. Surface finish.

        1. Surface finish of 16 micro-inches (0.40 micrometers) or less.

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Scored/Scratched.

        1. More than 0.005 in. (0.13 mm) in depth

        1. Reject

        2. Not more than 0.005 in. (0.13 mm) in depth

        1. Accept

        3. Airfoil fillet radius.

        1. Reject.

        4. On face edge.

        1. Refer to SPM TASK 70-35-03-300-501 to remove score.

        5. Remaining face.

        1. Accept.

    12. SUBTASK 72-41-22-220-247 Examine the Stage 7 Stator Vanes Platform (Bottom Face)

    1. Refer to Figure, Figure and Figure.

      2. Part marking and repair symbol location 16.

        1. On face edge

        1. Refer to SPM TASK 70-35-03-300-501 to remove score

        2. Remaining face

        1. Accept

      3. NOTE

        Class identification marks as scores.

        Examine the stage 7 stator vane at location 17.

        1. On face edge

        1. Refer to SPM TASK 70-35-03-300-501 to remove score.

        2. Remaining face

        1. Accept

    13. SUBTASK 72-41-22-220-208 Examine the Stage 7 Stator Vanes All Remaining Surfaces

      1. Nicked, dented or scored/scratched.

        1. Up to 0.005 in. (0.13 mm) in depth

        1. Accept

        2. More than in Step.

        1. Reject

    14. SUBTASK 72-41-22-220-219 Examine the Stage 7 Stator Vanes Chordal Checks

    1. Refer to Figure.

      2. Minimum chord at Z1 and Z2 at location A and B to the value of X.

      1. Accept.

      3. Less than value X.

      1. Reject.

    15. Figure: Stage 7 Stator Vanes - Inspection Locations

    Sheet 1

    Legend
    Stage 7 Stator Vanes - Inspection Locations

    Sheet 1

    Close

    Figure: Stage 7 Stator Vanes - Inspection Locations

    Sheet 2

    Legend
    Stage 7 Stator Vanes - Inspection Locations

    Sheet 2

    Close

    Figure: Stage 7 Stator Vanes - Inspection Locations

    Sheet 3

    Legend
    Stage 7 Stator Vanes - Inspection Locations

    Sheet 3

    Close

    Figure: Stage 7 Stator Vanes - Inspection Locations

    Sheet 4

    Legend
    Stage 7 Stator Vanes - Inspection Locations

    Sheet 4

    Close

    Figure: Stage 7 Stator Vanes - Chordal Checks

    Stage 7 Stator Vanes - Chordal Checks

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added repair reference. (19VG052)