TASK 72-45-12-200-001-A00 HPT Stage 1 Rotating Outer Air Seal - Examine, Inspection-001

DMC:V2500-A0-72-45-1201-00A-300A-C|Issue No:004.00|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 72-45-12-200-001-A00 HPT Stage 1 Rotating Outer Air Seal - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-040

2A0488

General

This TASK gives the procedure for the inspection of the Stage 1 HPT Air Seal. For the other part of the Stage 1 HPT Air Seal (outer), refer to TASK 72-45-12-200-000 (INSPECTION-000).

Fig/item numbers in 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 SUBTASK 72-45-12-230-051. Do the test before the part is visually examined.

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 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.

Record and Control of the Lives of Parts, SPM TASK 70-05-00-220-501.

Marking of Parts, SPM TASK 70-09-00-400-501.

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.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-12-230-057 Examine the Stage 1 HPT Air Seal (01-040) for Soot and Oil

      1. CAUTION

        MAKE SURE THAT YOU DO THIS INSPECTION BEFORE YOU CLEAN THE PART OR CLEANING PROCEDURE WILL REMOVE THE INDICATION OF SOOT AND OIL.

        Examine the Stage 1 HPT air seal for soot and oil.

        1. No soot or oil.

        1. Accept.

        2. Soot or oil.

        1. Do inspection of HPT for possible oil ignition event. Refer to TASK 72-45-00-200-801. Report all findings to IAE Technical Services.

    2. SUBTASK 72-45-12-230-051-001 Examine the Stage 1 HPT Air Seal (01-040) for Cracks

    1. Refer to Figure, Figure and Figure.

    2. Clean the Part. Refer to TASK 72-45-12-100-000 (CLEANING-000).

    3. Do the crack test on the part that is given below. Carefully examine all the radii, slots and knife-edge seals for cracks. Carefully examine the rear side of the knife-edge seals for cracks where the coating is not complete. Use the applicable penetrant inspection procedure.

    4. When you inspect the air seal for cracks make sure you check the important areas. These areas are shown in Figure and Figure.

      5. When you inspect the air seal for cracks in the radius adjacent to the anti-rotation tabs, carefully examine this location with low (2X to 5X) magnification. Refer to Figure and Figure.

        PART IDENT

        TASK/SUBTASK

        Stage 1 HPT Air Seal

        (Dip or Spray)

        1. Cracks in areas other than the knife-edge seals.

        1. Reject.

        2. Cracks in the coating of the knife-edge seals at Location 7. Remove the coating.

        1. Repair, VRS3196 TASK 72-45-12-300-002 (REPAIR-002).

          2. Do the crack test again with the coating removed. Examine the knife-edge seals for cracks in the base metal. If you find cracks.

          1. Reject.

        3. Cracks in the coating at the rear side of the knife-edge seals at Location 8, where the coating is not complete. Remove the coating.

        1. Repair, VRS3196 TASK 72-45-12-300-002 (REPAIR-002).

          2. Do the crack test again with the coating removed. Examine the rear side of the knife-edge seals for cracks in the base metal. If you find cracks.

          1. Reject.

    3. SUBTASK 72-45-12-220-051 Examine the Stage 1 HPT Air Seal (01-040) for Distortion, Damage and Wear on the Axial Contact Faces

    1. Refer to Figure.

      2. Examine the air seal at Location 1, for distortion, damage and wear on the axial contact faces (2 places).

        1. Distortion.

        1. Reject.

        2. Dents, nicks, scratches or corrosion.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

        3. Wear up to 0.002 in. (0.051 mm) in depth.

        1. Accept.

        4. Other than Step.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

    4. SUBTASK 72-45-12-220-052 Examine the Stage 1 HPT Air Seal (01-040) for Wear, Dents, Nicks, Scratches and Corrosion on the Outside Diameter Lock Lug Diameter Surface

    1. Refer to Figure.

      2. Examine the air seal at Location 2, for wear, dents, nicks, scratches and corrosion on the outside diameter lock lug diameter surface.

        1. Wear up to 0.001 in. (0.025 mm) in depth.

        1. Accept.

        2. Wear more than 0.001 in. (0.025 mm), dents, nicks, scratches or corrosion.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

    5. SUBTASK 72-45-12-220-053 Examine the Stage 1 HPT Air Seal (01-040) for Wear, Dents, Nicks, Scratches and Corrosion on the Inside Diameter Lock Lug Diameter Surface

    1. Refer to Figure.

      2. Examine the air seal at Location 3, for wear, dents, nicks, scratches and corrosion on the inside diameter lock lug diameter surface.

        1. Wear up to 0.001 in. (0.025 mm) in depth.

        1. Accept.

        2. Wear more than 0.001 in. (0.025 mm), dents, nicks, scratches or corrosion.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

    6. SUBTASK 72-45-12-220-054 Examine the Stage 1 HPT Air Seal (01-040) for Wear, Dents, Nicks, Scratches and Corrosion on the Inside Diameter Lock Lugs (Front Face)

    1. Refer to Figure.

      2. Examine the air seal at Location 4, for wear, dents, nicks, scratches and corrosion on the inside diameter lock lugs (front face).

        1. Wear up to 0.001 in. (0.025 mm) in depth.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

    7. SUBTASK 72-45-12-220-055 Examine the Stage 1 HPT Air Seal (01-040) for Wear, Dents, Nicks, Scratches and Corrosion in the Damper Groove

    1. Refer to Figure.

      2. Examine the air seal at Location 5, for wear, dents, nicks, scratches and corrosion in the damper groove.

        1. Wear up to 0.001 in. (0.025 mm) in depth.

        1. Accept.

        2. Other than Step.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

    8. SUBTASK 72-45-12-220-056 Examine the Stage 1 HPT Air Seal (01-040) for Chipped Plasma Spray Coating and Damage on the Knife-Edge Seals

    1. Refer to Figure.

      2. Examine the air seal at Location 6, for chipped coating and damage on the knife-edge seals.

        1. Chipped or damaged.

          1. If the damage or chipping does not go in to the base metal.

          1. Accept.

          2. Other than Step.

          1. Repair, VRS3196 TASK 72-45-12-300-002 (REPAIR-002) or VRS3726 TASK 72-45-12-300-003 (REPAIR-003).

    9. SUBTASK 72-45-12-220-057 Examine the Stage 1 HPT Air Seal (01-040) for Nicks, Dents and Corrosion

    1. Refer to Figure.

      2. Examine the air seal for nicks, dents and corrosion in the areas that are not identified as inspection locations in Figure.

        1. Nicks, dents or corrosion.

        1. Repair, VRS3195 TASK 72-45-12-300-001 (REPAIR-001).

    10. SUBTASK 72-45-12-220-058 Examine the Stage 1 HPT Air Seal (01-040) for the Axial Dimensions

      NOTE

      If the measured axial dimensions in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface B is flat by 0.0005 in. (0.0127 mm) and Diameter D maintain a clearance envelope of 10.664 in. (270.866 mm), and maintain Dimension P by 0.0005 in. (0.0127 mm) in a free or held condition. Dimension P is 0.503 in. (12.776 mm). In a free condition Dimension R applies and Diameter D is 10.660 in. to 10.680 in. (270.76 mm to 271.27 mm). Dimension R is 0.502 in. to 0.523 in. (12.751 mm to 13.284 mm). The air seal must be held only on Surfaces B, C, G, T and Z and Diameter D.

    1. Refer to Figure.

      2. Examine the air seal at Location 1550, for the axial dimension of the outer contact face.

        1. If the axial dimension is between 0.512 in. and 0.522 in. (13.005 mm and 13.259 mm).

        1. Accept.

        2. Write down the dimension of the outer contact face.

        2. If the axial dimension is less than 0.512 in. (13.005 mm), refer to Location 1551. If the dimension found above is 0.003 in. (0.076 mm) or more than the dimension you get in Location 1551.

        1. Accept.

        2. Write down the dimension of the outer contact face.

        3. Other than Step or Step.

        1. Reject.

      3. Examine the air seal at Location 1551, for the axial dimension of the outside diameter inner contact face.

        1. If the axial dimension is between 0.502 in. and 0.523 in. (12.751 mm and 13.284 mm).

        1. Accept.

        2. Write down the axial dimension.

        2. Other than Step.

        1. Reject.

    11. SUBTASK 72-45-12-220-059 Examine the Stage 1 HPT Air Seal (01-040) for the Lock Lug Diameters

      NOTE

      If the measured diameters in a free condition are not satisfactory, a held condition is permitted. All dimensions apply when Surface B is flat by 0.0005 in. (0.0127 mm), Diameter D maintains a clearance envelope of 10.664 in. (270.866 mm), and the seal maintains Dimension P by 0.0005 in. (0.0127 mm) in a free or held condition. Dimension P is 0.503 in. (12.776 mm). The air seal must be held only on Surfaces B, C, G, T and Z, and Diameter D. In a free condition Dimension R is applicable and Diameter D is between 10.660 and 10.680 in. (270.76 mm and 271.27 mm) and Diameter H is between 14.160 in. and 14.172 in. (359.66 mm and 359.97 mm). Dimension R is between 0.502 in. and 0.523 in. (12.75 mm and 13.28 mm).

    1. Refer to Figure.

      2. Examine the air seal at Location 1504, for the axial outside diameter of the lock lug.

        1. If the diameter is between 17.753 in. and 17.755 in. (450.926 mm and 450.977 mm).

        1. Accept.

        2. Write down the dimension of the diameter.

        2. If the diameter is between 17.747 in. and 17.7564 in. (450.774 mm and 451.013 mm)

        1. Accept part for select fit only.

        2. Write down the dimension of the diameter.

          NOTE

          This part can be used only if the mating part has a diameter that will result in fit of reference No. 1504. Refer to TASK 72-45-10-440-001-A00 (ASSEMBLY-001).

        3. Other than Step.

        1. Reject.

      3. Examine the air seal at Location 1502, for the inside diameter of the lock lug.

        1. If the average diameter is between 14.165 in. and 14.167 in. (359.791 mm and 359.842 mm).

        1. Accept.

        2. Write down the dimension of the diameter.

        2. If the average diameter is between 14.160 in. and 14.1677 in. (359.664 mm and 359.860 mm).

        1. Accept part for select fit only.

        2. Write down the dimension of the diameter.

          NOTE

          This part can be used only if the mating part has a diameter that will result in fit of reference No. 1502. Refer to TASK 72-45-10-440-001.

        3. Other than Step.

        1. Reject.

    12. SUBTASK 72-45-12-220-060 Examine the Stage 1 HPT Air Seal (01-040) for the Diameters of the Knife-Edge Seals

    1. Refer to Figure.

      2. Examine the air seal at Location 2257, for the diameter of the front knife-edge seal.

        1. If the front knife-edge seal diameter is between 11.377 in. and 11.407 in. (288.98 mm and 289.74 mm) and the base metal does not show.

        1. Accept.

        2. Write down the dimension of the diameter.

        2. Other than Step.

          1. If the diameter is a minimum of 11.375 in. (288.93 mm). If the part is not marked with VRS3726.

          1. Repair, VRS3196 TASK 72-45-12-300-002 (REPAIR-002).

          2. If the diameter is between 11.331 in. and 11.375 in. (287.81 mm and 288.93 mm).

          1. Repair, VRS3726 TASK 72-45-12-300-003 (REPAIR-003).

      3. Examine the air seal at Location 2258, for the diameter of the middle knife-edge seal.

        1. If the middle knife-edge seal diameter is between 11.477 in. and 11.507 in. (291.52 mm and 292.28 mm) and the base metal does not show.

        1. Accept.

        2. Write down the dimension of the diameter.

        2. Other than Step.

          1. If the diameter is a minimum of 11.475 in. (291.47 mm). If the part is not marked with VRS3726.

          1. Repair, VRS3196 TASK 72-45-12-300-002 (REPAIR-002).

          2. If the diameter is between 11.431 in. and 11.475 in. (290.35 mm and 291.47 mm).

          1. Repair, VRS3726 TASK 72-45-12-300-003 (REPAIR-003).

      4. Examine the air seal at Location 2259, for the diameter of the rear knife-edge seal.

        1. If the rear knife-edge seal diameter is between 11.577 in. and 11.607 in. (294.06 mm and 294.82 mm) and the base metal does not show.

        1. Accept.

        2. Write down the dimension of the diameter.

        2. Other than Step.

          1. If the diameter is a minimum of 11.575 in. (294.01 mm). If the part is not marked with VRS3726.

          1. Repair, VRS3196 TASK 72-45-12-300-002 (REPAIR-002).

          2. If the diameter is between 11.531 in. and 11.575 in. (292.89 mm and 294.01 mm).

          1. Repair, VRS3726 TASK 72-45-12-300-003 (REPAIR-003).

    13. SUBTASK 72-45-12-220-061 Examine the Stage 1 HPT Air Seal (01-040) for the Engine Run Cycles of the Part

    1. Refer to Figure.

    2. Examine the air seal at Location 1, for the engine run cycles of the part at each disassembly.

      3. Calculate the new engine run cycles.

      1. Get the part cycles from the engine records since the last shop visit (disassembly) and write the cycles down.

      2. Write down the engine run cycles marked on the part at Location 1.

        NOTE

        Refer to TASK 5-10-00 for special instructions, if required, to use a formula to calculate the life cycles that remain for this part.

      3. Add the results of (1) and (2). The result is the new engine run cycles.

      4. Mark the new quantity of engine run cycles of the part on the air seal, refer to SPM TASK 70-05-00-220-501.

      1. Electrical contact is only permitted at Location 2.

      2. Make a mark on the air seal, refer to SPM TASK 70-09-00-400-501 to Location 1.

        3. Examine the part at Location 2, for burns and pitting.

          1. Burns or pitting.

          1. Reject.

    14. Figure: Stage 1 HPT Air Seal Inspection Locations

    Stage 1 HPT Air Seal Inspection Locations

    Figure: Stage 1 HPT Air Seal Inspection Locations

    Stage 1 HPT Air Seal Inspection Locations

    Figure: Stage 1 HPT Air Seal Important FPI Inspection Locations

    Sheet 1

    Legend
    Stage 1 HPT Air Seal Important FPI Inspection Locations

    Sheet 1

    Close

    Figure: Stage 1 HPT Air Seal Important FPI Inspection Locations

    Sheet 2

    Legend
    Stage 1 HPT Air Seal Important FPI Inspection Locations

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to add subtask to examine the stage 1 HPT air seal (01-040) for soot and oil. (16VC282)