TASK 72-41-22-200-001-A00 HPC Stage 7 Stator Vane - Examine, Inspection-001

DMC:V2500-A0-72-41-2207-00A-300A-C|Issue No:003.00|Issue Date:2017-11-01

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-A00 HPC Stage 7 Stator Vane - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

02-350

6A3266

02-400

6A3265C01

02-448

6A3265C01

02-450

6A3265C02

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 the 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 the 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 72-41-22-230-051 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

        SPM TASK 70-23-03-230-501

        1. Cracked.

          1. Airfoil tips.

          1. Refer to Step.

          2. All remaining areas.

          1. Reject.

    2. SUBTASK 72-41-22-220-052 Examine the Stage 7 Stator Vanes Concave and Convex Airfoil Surfaces at Locations 1 and 2

    1. Refer to Figure, 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.

        1. Roughness up to 30 micro-inches (0.80 micrometers).

        1. Accept.

        2. More than in Step.

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

          NOTE

          Any vanes which are in excess of 30 micro-inches (0.80 micrometers), surface inspection must include all of the vanes which have been removed.

    3. SUBTASK 72-41-22-220-053 Examine the Stage 7 Stator Vanes Stop Slot at Location 3

    1. Refer to Figure, Figure and Figure.

      2. Galled.

      1. Reject.

      3. Damage.

        1. To the corners of the slot.

        1. Reject.

    4. SUBTASK 72-41-22-220-054 Examine the Stage 7 Stator Vanes Leading and Trailing Edges at Locations 4 and 5

    1. Refer to Figure, 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.

    5. SUBTASK 72-41-22-220-056 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

    6. SUBTASK 72-41-22-220-057 Examine the Stage 7 Stator Vanes Faces at Location 10

    1. Refer to Figure, Figure and 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

    7. SUBTASK 72-41-22-220-106 Examine the Stage 7 Stator Vanes Airfoil Tips at Location 1057 for Cracks and Rubs

    1. Refer to Figure, Figure and Figure.

      2. Cracked.

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

      3. Rubbed.

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

    8. SUBTASK 72-41-22-220-058 Examine the Stage 7 Stator Vanes Cheeks at Locations 11, 12, 13 and 14

    1. Refer to Figure, 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

    9. SUBTASK 72-41-22-220-060 Examine the Stage 7 Stator Vanes at Location 1120 and 1122

    1. Refer to Figure, Figure and Figure.

      2. Location 1120.

        1. If the thickness of the land is between 0.0755 in. to 0.0787 in. (1.92 mm to 2.00 mm)

        1. Accept

        2. If the thickness of the land is between 0.0680 in. to 0.0755 in. (1.73 mm to 1.92 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. (1.73 mm to 1.92 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 0.0952 in. to 0.0984 in. (2.42 mm to 2.50 mm)

        1. Accept

        2. If the thickness of the land is between 0.0856 in. to 0.0952 in. (2.18 mm to 2.42 mm) over an area of not more than 25 percent

        1. Accept

        3. If the thickness of the land is between 0.0856 in. to 0.0952 in. (2.18 mm to 2.42 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

    10. SUBTASK 72-41-22-220-107 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

    11. 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

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to update SPM reference. (17VC212)