TASK 72-41-12-200-002-A00 HPC Stage 9 - 12 Drum Disk - Examine, Inspection-002

DMC:V2500-A0-72-41-1201-00A-310A-C|Issue No:005.00|Issue Date:2019-08-01

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 72-41-12-200-002-A00 HPC Stage 9 - 12 Drum Disk - Examine, Inspection-002

Effectivity

FIG/ITEM

PART NO.

01-600

2A2100-01

01-600

2A2200-01

01-600

2A2600-01

01-600

2A3200-01

01-600

2A3300-01

01-600

2A3400-01

01-600

2A3500-01

General

This TASK gives the procedure for the inspection of the rear HPC discs.

Fig./Item numbers is parentheses in the procedure agree with those used in the IPC.

The policy that is necessary for inspection is given in SPM TASK 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to SPM TASK 70-10-00-100-501.

All 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 and TASK 72-41-12-230-079. Do the test before the part is visually inspected.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in the 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 could be shown to be necessary at a later date.

All 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 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 data on these items refer to SPM.

Method of Testing for Crack Indications.

Chemical Processes.

Surface Protection.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 02-005 ADHESIVE TAPE (MASKING)LOCALCoMat 02-005

Spares

NONE

Safety Requirements

CAUTION

THE WORD FOCUS, SPECIFIED IN SUBTASK TITLES, INDICATES CRITICAL LOCATIONS ON COMPONENTS TO WHICH SPECIAL ATTENTION MUST BE GIVEN.

Procedure

    1. SUBTASK 72-41-12-230-055 Examine the Rear HPC Disc (01-600) for Cracks

    1. NOTE

      The examination of the whole component using Ultra High Sensitivity Fluorescent Penetrant is required.

      Clean the Part. Refer to the TASK 72-41-12-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that is given below. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        Rear HPC Disc

        (Dip or Spray)

        1. Cracked.

        1. Reject.

    2. SUBTASK 72-41-12-230-084 Focus Inspect the Rear HPC Disc for Cracks

    1. Inspect according to TASK 72-41-12-200-004, Subtask 72-41-12-230-079.

    3. SUBTASK 72-41-12-220-061 Examine the Rear HPC Disk (01-600) for Damage on the Front Slots

    1. Refer to Figure.

      2. Examine the disk at Locations 1, 2 and 4 for damage.

        1. Nicks, dents, scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Other than Step

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      3. Examine the disk at Locations 3 and 5 for damage.

        1. Surface damage that is up to 0.003 in. (0.076 mm) in depth.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

    4. SUBTASK 72-41-12-220-062 Examine the Rear HPC Disk (01-600) for Damage on the Front Flange and Bent Segments

    1. Refer to Figure.

      2. Examine the disk at Location 6 for damage on the front flange.

        1. Nicks, dents , scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Damage that goes into the surface roughness texture and is 0.125 in. (3.175 mm) from the slots and is no more than 0.003 in. (0.076 mm) in depth.

        1. Accept.

        3. Other than Step or Step.

        1. Reject.

      3. Examine the disk at Location 6 for bent segments.

        1. Bent segments.

        1. Reject.

    5. SUBTASK 72-41-12-220-063 Examine the Rear HPC Disk (01-600) for Damage and Wear on the Rear Bolt Holes

    1. Refer to Figure.

      2. Examine the disk at Location 1 for damage on the rear bolt holes (40 Locations).

        1. Nicks, dents, scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      3. Examine the disk at Location 1 for wear on the bolt holes (40 Locations).

        1. If the bolt holes are more than 0.3139 in. (7.973 mm) in diameter.

        1. Reject.

    6. SUBTASK 72-41-12-220-064 Examine the Rear HPC Disk (01-600) for Damage on the Rear Flange and Bent Segments

    1. Refer to Figure.

      2. Examine the disk at Location 2 for damage on the rear flange.

        1. Nicks, dents, scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Damage that goes into the surface roughness texture and is 0.125 in. (3.175 mm) from the bolt holes and is no more than 0.003 in. (0.076 mm) in depth.

        1. Accept.

        3. Other than Step or Step.

        1. Reject.

      3. Examine the disk at Locations 3 and 4 for damage.

        1. Surface damage that is up to 0.003 in. (0.076 mm) in depth.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      4. Examine the disk at Location 5 for damage.

        1. Nicks, dents , scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

    7. SUBTASK 72-41-12-220-065 Examine the Rear HPC Disk (01-600) for Damage in the Vent Holes

    1. Refer to Figure.

      2. Examine the disk at Location 1 for damage in the vent holes.

        1. Nicks, dents , scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

    8. SUBTASK 72-41-12-220-066 Examine the Rear HPC Disk (01-600) for Internal Damage

    1. Refer to Figure.

      2. Examine the disk at Locations 2, 4, 6, 8, 10, 13 and 15 for damage.

        1. If the damage is on opposite sides and the total depth is not more than 0.003 in. (0.076 mm).

        1. Accept.

        2. If the damage in areas other than opposite sides is not more than 0.003 in. (0.076 mm).

        1. Accept.

        3. Other than Step or Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      3. Examine the disk at Locations 3, 12 and 14 for damage.

        1. Nicks, dents, scratches or tool marks that do not go into the surface roughness texture.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      4. Examine the disk at Location 5, 7, 9 and 11 for damage.

        1. Nicks, dents, scratches or tool marks that do no go into the surface roughness texture.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      5. Weld spatter.

        1. Inner cavity weld spatter.

        1. Accept.

    9. SUBTASK 72-41-12-220-067 Examine the Rear HPC Disk (01-600) for Damage in the Blade Slots, the Loading Slots, and the Locking Slots

    1. Refer to Figure.

      2. Examine the disk at Location 1 (both sides) for damage on the upper area of the slots.

        1. If the nicks, dents or scratches are no more than 0.003 in. (0.076 mm) in depth and there is no galling.

        1. Accept.

        2. Other than Step.

        1. Repair VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

      3. Examine the disk at Locations 2 thru 5 for damage on the lower area of the blade slot and on the loading and locking slots.

        1. If the nicks, dents or scratches are no more than 0.001 in. (0.025 mm) in depth and there is no galling.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3436 TASK 72-41-12-300-004 (REPAIR-004).

    10. SUBTASK 72-41-12-220-068 Examine the Rear HPC Disk (01-600) for Damage on the Ceramic Rub Strips

    1. Refer to Figure.

      2. Examine the disk at Location 1, 2, 3 and 4 for damage on the stage 8, 9, 10 and 11 ceramic rub strip.

        1. Chips.

          1. Up to 10 percent of the total width, a total of 25 percent of the circumference, and 0.004 in. (0.102 mm) in depth along both edges.

          1. Accept.

          2. Other thanStep.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          2. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          3. For all other PNs.

          4. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

        2. Pits.

          1. Up to 0.025 in. (0.635 mm) in diameter and 0.004 in. (0.102 mm) in depth.

          1. Accept.

          2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          2. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          3. For all other PNs.

          4. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

        3. Scratches.

          1. Up to 0.002 in. (0.051 mm) in depth.

          1. Accept.

          2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          2. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          3. For all other PNs.

          4. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

        4. Loose coating or blisters.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          1. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          2. For all other PNs.

          1. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

        5. Rub track.

          1. Light smearing of coating that is no more than 0.002 in. (0.05 mm) in depth.

          1. Accept.

          2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          2. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          3. For all other PNs.

          4. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

    11. SUBTASK 72-41-12-220-069 Examine the Rear HPC Disk (01-600) for the Diameters

    1. Refer to Figure.

      2. Examine the disk at Location 1 for the front outside diameter.

        1. If the diameter is between 16.1438 in. and 16.1462 in. (410.053 mm and 410.113 mm).

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3444 TASK 72-41-12-300-012 (REPAIR-012).

      3. Examine the disk at Location 2 for the rear outside diameter.

        1. If the diameter is between 13.508 in. and 13.509 in. (343.104 mm and 343.129 mm).

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3441 TASK 72-41-12-300-009 (REPAIR-009).

      4. Examine the disk at Location 1 for the disk bore diameters (4 Locations).

        1. If the diameters are between 5.998 in. and 6.002 in. (152.349 mm and 152.451 mm).

        1. Accept.

        2. Other than Step.

        1. Reject.

      5. Examine the disk at Location 2 for the front inside diameter.

        1. If the diameter is between 12.510 in. and 12.512 in. (317.754 mm and 317.804 mm).

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3443 TASK 72-41-12-300-011 (REPAIR-011).

    12. SUBTASK 72-41-12-220-070 Examine the Rear HPC Disk (01-600) for the Outside Diameters

    1. CAUTION

      DO NOT USE A PI TAPE TO MEASURE THE DIAMETERS, THE DIAMETERS ARE ON A CONICAL SURFACE.

      Refer to Figure.

      2. Examine the disk at Location 1 for the outside diameter of the stage 8 ceramic rub strip.

        1. If the diameter is between 18.325 in. and 18.329 in. (465.455 mm and 465.557 mm).

        1. Accept.

        2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          1. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          2. For all other PNs.

          1. Repair VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

      3. Examine the disk at Location 2 for the outside diameter of the stage 9 ceramic rub strip.

        1. If the diameter is between 18.583 in. and 18.587 in. (472.008 mm and 472.110 mm).

        1. Accept.

        2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          1. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          2. For all other PNs.

          1. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

      4. Examine the disk at Location 3 for the outside diameter of the stage 10 ceramic rub strip.

        1. If the diameter is between 18.622 in. and 18.626 in. (472.999 mm and 473.100 mm).

        1. Accept

        2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          1. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          2. For all other PNs

          1. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

      5. Examine the disk at Location 4 for the outside diameter of the stage 11 ceramic rub strip.

        1. If the diameter is between 18.627 in. and 18.631 in. (473.126 mm and 473.227 mm).

        1. Accept.

        2. Other than Step.

          1. For PNs 2A2100-01, 2A2200-01, 2A3300-01 and 2A3400-01.

          1. Repair, VRS3051 TASK 72-41-12-300-023 (REPAIR-023).

          2. For all other PNs

          1. Repair, VRS3437 TASK 72-41-12-300-005 (REPAIR-005).

    13. Figure: Rear HPC disk inspection locations

    Rear HPC disk inspection locations

    Figure: Rear HPC disk inspection locations

    Rear HPC disk inspection locations

    Figure: Rear HPC disk inspection locations

    Rear HPC disk inspection locations

    Figure: Rear HPC disk inspection locations

    Rear HPC disk inspection locations

    Figure: Rear HPC Disk inspection locations

    Rear HPC Disk inspection locations

    Figure: Rear HPC disk inspection locations

    Rear HPC disk inspection locations

    Figure: Rear HPC disk inspection locations

    Rear HPC disk inspection locations

    Figure: Focused Inspection - Stages 9, 10, 11 and 12 disks bore and Stage 9 Air transfer holes (Vent Holes)

    Focused Inspection - Stages 9, 10, 11 and 12 disks bore and Stage 9 Air transfer holes (Vent Holes)

    Figure: Focused Inspection - Blade Loading and Locking Slots Stages 9, 10, 11 and 12

    Focused Inspection - Blade Loading and Locking Slots Stages 9, 10, 11 and 12

    Figure: Focused Inspection - Front Flange Slots

    Focused Inspection - Front Flange Slots

    Figure: Focused Inspection - Rear Bolt Holes

    Focused Inspection - Rear Bolt Holes

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised step. (19VG085)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 02-005
Type:sp01
Supply Short Name:CoMat 02-005 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-005 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 2/94 (RR REF)AT 7 BLACK, WATERPROOF
Suppliers:
ManufacturerRemarks
LOCAL
U0415
K6835