TASK 72-41-15-200-001-B00 HP Compressor Stage 3 Rotor Blade - Examine, Inspection-001

DMC:V2500-A0-72-41-1503-00B-300A-C|Issue No:008.00|Issue Date:2021-02-01

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 72-41-15-200-001-B00 HP Compressor Stage 3 Rotor Blade - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-200

6A8353

01-200

6A8688

General

This TASK gives the procedure for the inspection of the HP Compressor Stage 3 Rotor Blades.

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

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

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 number are in SPM.

References

Refer to SPM for data on these items:

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

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

Some data on these items are 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

NameManufacturerPart Number / IdentificationQuantityRemark
TransducerLOCALTransducer

8 mm diameter - to suit IAE 3R19815

Indicator towerLOCALIndicator tower

to suit IAE 3R19815

IAE 3R19817 Master blade0AM53IAE 3R198171
IAE 3R19815 Clapper width checking fixture0AM53IAE 3R198151
IAE 3R19816 Inspection jaws0AM53IAE 3R198161

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-15-230-098 Examine the Stage 3 Rotor Blades for Cracks

    1. Refer to Figure and Figure.

    2. Clean the parts. Refer to TASK 72-41-15-100-000 (CLEANING-000).

      3. NOTE

        During examination of the part special attention must be given to the inspection locations as given in Step to Step.

        Do the fluorescent penetrant inspection for cracks.

        PART IDENT

        TASK/SUBTASK

        Stage 3 Rotor Blades

        1. Leading edge (Location 3).

          1. Cracked.

          1. Refer to Step.

        2. Airfoil tips (Location 1046).

          1. Cracked

          1. Refer to Step

        3. Groove (Location 1010).

          1. Cracked

          1. Reject. Reject the cracked blade and the full stage 3 rotor blade set from which it was assembled with

        4. Dovetail (Location 12) top edge of bedding.

          1. Cracked

          1. Reject. Reject only the cracked blade(s). Do not reject the full set

        5. NOTE

          If you can see fluorescent penetrant indications in the dovetail shank, the part must be examined under white light at 6x to 30x binoculars for cracks.

          Dovetail shank (Location 13).

          1. Cracked

          1. Reject. Reject only the cracked blade(s). Do not reject the full set

        6. All remaining areas.

          1. Cracked

          1. Reject. Reject only the cracked blade(s). Do not reject the full set

    2. SUBTASK 72-41-15-220-280 Examine the Stage 3 Rotor Blades Clapper Hard Coating at Location 10

    1. Refer to Figure, Figure and Figure.

      2. Make sure the hard coating is intact and check the clapper abutment face for wear.

        1. NOTE

          Minor wear caused by the bedding in of the abutment faces will make the abutment surface shinier than the abutment surface of a new blade. There will be no chips on the clapper abutment face.

          Minor wear caused by bedding in of the abutment faces

        1. Accept

        2. More than Step

        1. Repair, VRS6635 TASK 72-41-15-300-053 (REPAIR-053) if necessary. Repair, VRS6236 TASK 72-41-15-300-035 (REPAIR-035) or Repair, VRS9297 TASK 72-41-15-300-058 (REPAIR-058). Repair, VRS6616 TASK 72-41-15-300-052 (REPAIR-052) if necessary.

      3. Measure the clapper width along plane AM.

        1. More than 1.932 in. (49.07 mm)

        1. Accept

        2. Less than Step

        1. Repair, VRS6635 TASK 72-41-15-300-053 (REPAIR-053) if necessary. Repair, VRS6236 TASK 72-41-15-300-035 (REPAIR-035) or Repair, VRS9297 TASK 72-41-15-300-058 (REPAIR-058). Repair, VRS6616 TASK 72-41-15-300-052 (REPAIR-052) if necessary.

    3. SUBTASK 72-41-15-220-269 Examine the Stage 3 Rotor Blades Concave and Convex Airfoil Surfaces at Locations 1 and 2

    1. Refer to Figure.

      2. Eroded

      1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

      3. Nicks or dents

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

        1. Accept

        2. More than in Step

        1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

      4. Scored.

        1. Along the Airfoil Chord - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch along the airfoil chord.

          1. Accept.

          2. If stylus hesitates or catches on the airfoil chord.

          1. Reject.

        2. Along the span of the airfoil surface.

        1. Reject.

    4. SUBTASK 72-41-15-220-270-A00 Examine the Stage 3 Rotor Blades Concave and Convex Airfoil Surface Finish at Locations 1 and 2 (SBE 72-0487)

    1. Refer to Figure.

      2. Mean surface finish of 16 micro-inches (0.40 micrometres) or less

      1. Accept

      3. Examine the blade root to find if VRS6065 is completed

        1. Other than in Step if the repair identification symbol and /2 is engraved adjacent to the part number

        1. Reject

        2. Other than in Step and Step

        1. Repair, VRS6065 TASK 72-41-15-300-020 (REPAIR-020)

    5. SUBTASK 72-41-15-220-270-B00 Examine the Stage 3 Rotor Blades Concave and Convex Airfoil Surface Finish at Locations 1 and 2 (SBE 72-0561)

    1. Refer to Figure.

      2. Surface finish of 10 micro-inches (0.25 micrometres) or less.

      1. Accept.

      3. Examine the blade root to find if VRS6065 has been completed

        1. Other than in Step if the repair identification symbol and /2 is engraved adjacent to the part number

        1. Reject

        2. Other than in Step and Step

        1. Repair, VRS6065 TASK 72-41-15-300-020 (REPAIR-020)

    6. SUBTASK 72-41-15-220-271 Examine the Stage 3 Rotor Blades Leading Edge at Location 3

    1. Refer to Figure.

      2. Cracked or eroded

      1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

      3. Nicks or dents

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

        1. Accept

        2. More than in Step

        1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

    7. SUBTASK 72-41-15-220-272 Examine the Stage 3 Rotor Blades Trailing Edge at Location 4

    1. Refer to Figure.

      2. Eroded

      1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

      3. Nicks or dents

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

        1. Accept

        2. More than in Step

        1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

    8. SUBTASK 72-41-15-220-273 Examine the Stage 3 Rotor Blades Tips at Location 1046

    1. Refer to Figure.

      2. Cracked.

      1. Repair, VRS6049 TASK 72-41-15-300-011 (REPAIR-011) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

      3. Rubbed or worn.

        NOTE

        This is an alternative to Step. If measurements taken during limits from disassembly (TASK 72-41-10-040-001-B00 or TASK 72-41-10-040-001-C00) have not been supplied, Step can be skipped.

        1. Repair, VRS6049 TASK 72-41-15-300-011 (REPAIR-011) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

    9. SUBTASK 72-41-15-220-274-A00 Examine the Stage 3 Rotor Blades Groove at Location 1010 (SBE 72-0487)

    1. Refer to Figure.

      2. Galled.

        1. Not more than 0.002 in. (0.05 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Worn.

        1. If the width of the retaining plate groove is between 0.1016 in. and 0.1055 in. (2.580 mm and 2.680 mm).

        1. Accept.

        2. If the width is more than in Step.

        1. Reject.

    10. SUBTASK 72-41-15-220-274-B00 Examine the Stage 3 Rotor Blades Groove at Location 1010 (SBE 72-0561)

    1. Refer to Figure.

      2. Galled.

        1. Not more than 0.002 in. (0.05 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Worn.

        1. If the width of the retaining plate groove is between 0.0996 in. and 0.1075 in. (2.530 mm and 2.730 mm).

        1. Accept.

        2. If the width is more than in Step.

        1. Reject.

    11. SUBTASK 72-41-15-220-275 Examine the Stage 3 Rotor Blades Dovetail at Location 5, 12, 13, 14, 15 and 16 (SBE 72-0487)

      NOTE

      Damage of any kind is not allowed on the bedding area (also known as the pressure face) of the dovetail.

    1. Refer to Figure, Figure and Figure.

      2. Location 12 - dovetail top edge of bedding.

        1. Scored, galled, imperfections, nicks or dents.

        1. Reject.

      3. Location 13 - dovetail shank.

        1. Galled.

        1. Reject.

        2. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

      4. Location 14 - dovetail end face adjacent to blade groove at location 1010.

        1. Gouges, galled or fretted.

        1. Reject.

        2. Scratched and scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

      5. Locations 15 and 16 - dovetail end face edges and area adjacent to blade groove at Location 1010.

        1. Gouges, galled or fretted.

        1. Reject.

        2. Scratched or scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

      6. Location 5 - all other remaining faces and/or areas on dovetail excluding the bedding area (pressure face).

        1. Galled.

        1. Reject.

        2. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

    12. SUBTASK 72-41-15-220-276 Examine the Stage 3 Rotor Blades Dovetail at Location 5, 12, 13, 14, 15 and 16 (SBE 72-0561)

      NOTE

      Damage of any kind is not allowed on the bedding area (also known as the pressure face) of the dovetail.

    1. Refer to Figure, Figure and Figure.

      2. Location 12 - dovetail top edge of bedding.

        1. Scored, galled, imperfections, nicks or dents.

        1. Reject.

      3. Location 13 - dovetail shank.

        1. Galled.

        1. Reject.

        2. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

      4. Location 14 - dovetail end face adjacent to blade groove at location 1010.

        1. Nicks, dents, scratches or gouges.

          1. Not more than 0.002 in. (0.05 mm) in depth.

          1. Accept.

          2. More than in Step.

          1. Reject.

        2. Scored, galled or fretted.

          1. Not more than 0.002 in. (0.05 mm) in depth.

          1. Accept.

          2. More than in Step.

          1. Reject.

      5. Locations 15 and 16 - dovetail end face edges and area adjacent to blade groove at Location 1010.

        1. Gouges, galled, or fretted.

        1. Reject.

        2. Scratched or scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

      6. Location 5 - all other remaining faces and/or areas on dovetail excluding the bedding area (pressure face).

        1. Galled.

        1. Reject.

        2. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch.

          1. Accept.

          2. If stylus hesitates or catches.

          1. Reject.

        3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

        4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

    13. SUBTASK 72-41-15-220-277 Examine the Stage 3 Rotor Blades Cheeks at Locations 6 and 7

    1. Refer to Figure.

      2. Galled.

        1. Up to 0.002 in. (0.05 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch.

        1. Accept.

        2. If stylus hesitates or catches.

        1. Reject.

      4. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

        1. Accept.

        2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

        1. Reject.

      5. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

        1. Accept.

        2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

        1. Reject.

    14. SUBTASK 72-41-15-220-613 Examine the Stage 3 Rotor Blades Front and Rear Lip at Location 17

    1. Refer to Figure.

      2. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch on the platform surface and one or more of the following criteria is met.

          One score of any length.

          Two adjacent scores, one of which is less than 0.472 in. (12 mm) in length and the scores are clearly separated.

        1. Accept.

        2. If stylus hesitates or catches on the platform surface or the criteria in Step is not maintained.

        1. Reject.

      3. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

        1. Accept.

        2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

        1. Reject.

      4. Nicks and dents - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

        1. Accept.

        2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

        1. Reject.

    15. SUBTASK 72-41-15-220-278 Examine the Stage 3 Rotor Blades Platform at Location 8

    1. Refer to Figure.

      2. Nicks or dents.

        1. On top/gas washed face of the platform.

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

          1. Accept.

          2. More than in Step.

          1. Reject.

        2. On the bottom/non-gas washed face of the platform - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the nick or dent does not display sharp edges, raised material, or burrs.

          1. Accept.

          2. If stylus hesitates or catches, the nick or dent displays sharp edges, raised material, or burrs.

          1. Reject.

      3. Scored.

        1. On top/gas washed face of the platform - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch on the platform surface.

          1. Accept.

          2. If stylus hesitates or catches on the platform surface.

          1. Reject.

        2. On the bottom/non-gas washed face of the platform - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch on the platform surface and one or more of the following criteria is met.

            One score of any length.

            Two adjacent scores, one of which is less than 0.472 in. (12 mm) in length and the scores are clearly separated.

          1. Accept.

          2. If stylus hesitates or catches on the platform surface or the criteria in Step is not maintained.

          1. Reject.

      4. Imperfections

        1. On the bottom/non-gas washed face of the platform - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

          1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

          1. Accept.

          2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

          1. Reject.

    16. SUBTASK 72-41-15-220-425 Examine the Stage 3 Rotor Blades Platform Surface Finish at Location 8 (SBE 72-0561)

    1. Refer to Figure.

      2. Surface finish of 16 micro-inches (0.40 micrometres) or less.

      1. Accept.

      3. More than in Step.

      1. Reject

    17. SUBTASK 72-41-15-220-279 Examine the Stage 3 Rotor Blades Root Radius at Location 9

    1. Refer to Figure.

      2. Nicks or dents

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

        1. Accept

        2. More than in Step.

        1. Repair, VRS6009 TASK 72-41-15-300-001 (REPAIR-001)

      3. Scored - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch.

        1. Accept.

        2. If stylus hesitates or catches.

        1. Reject.

      4. Imperfections - Inspect with SPM TASK 70-21-00-220-501 with a 0.020 in. (0.50 mm) radius stylus.

        1. If stylus does not hesitate or catch and the imperfection does not display sharp edges, raised material, burrs, or a dark bottom.

        1. Accept.

        2. If stylus hesitates or catches, the imperfection displays sharp edges, raised material, burrs, or a dark bottom.

        1. Reject.

    18. SUBTASK 72-41-15-220-281 Examine the Stage 3 Rotor Blades Balancing Plug Hole at Location 11

    1. Refer to Figure.

      2. Burrs or scored

      1. Reject

    19. SUBTASK 72-41-15-220-282 Examine the Stage 3 Rotor Blades Chordal Checks

    1. Refer to Figure.

      2. Minimum chord Z1, Z2 and Z3 at Location A, B and C to the value of X.

      1. Accept.

      3. Less than value X.

      1. Reject.

    20. SUBTASK 72-41-15-220-485 Examine the Stage 3 Rotor Blades, Length Checks

      NOTE

      This is an alternative to measurements taken during disassembly (TASK 72-41-10-040-001-B00 or TASK 72-41-10-040-001-C00). If Step has been accomplished, Step can be skipped.

    1. Refer to Figure.

    2. Measure the blade length "X".

      3. Between 5.7683 in. (146.515 mm) and 5.7760 in. (146.719 mm).

      1. Accept.

      4. Between 5.7425 in. (145.860 mm) and 5.7682 in. (146.514 mm).

      1. Repair, VRS6049 TASK 72-41-15-300-011 (REPAIR-011) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

      5. Less than the minimum repair limit given in Repair, VRS6049 TASK 72-41-15-300-011 (REPAIR-011) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

      1. Reject.

    21. SUBTASK 72-41-15-380-102 Apply the Dry Film Lubricant to the Stage 3 Rotor Blades

      1. Apply the dry film lubricant to the blade dovetail

      1. Repair, VRS6486 TASK 72-41-15-300-046 (REPAIR-046)

    22. Figure: Stage 3 Rotor Blades - Inspection Locations And Orientation

    Stage 3 Rotor Blades - Inspection Locations And Orientation

    Figure: Stage 3 Rotor Blades - Inspection Locations

    Stage 3 Rotor Blades - Inspection Locations

    Figure: Stage 3 Rotor Blades - Chordal Checks

    Stage 3 Rotor Blades - Chordal Checks

    Figure: Stage 3 Rotor Blades - Measure Length "X"

    Stage 3 Rotor Blades - Measure Length "X"

    Figure: Stage 3 Rotor Blades - Inspection Locations

    Stage 3 Rotor Blades - Inspection Locations

    Figure: SBE 72-0487 and SBE 72-0561: Examine the Stage 3 Rotor Blades

    SBE 72-0487 and SBE 72-0561: Examine the Stage 3 Rotor Blades

    Figure: SBE 72-0487 and SBE 72-0561: Examine the Stage 3 Rotor Blades

    SBE 72-0487 and SBE 72-0561: Examine the Stage 3 Rotor Blades

    Figure: Pre SBE 72-0481, SBE 72-0481 and Pre SBE 72-0487: Stage 3 Rotor Blades Clapper Checking Fixture

    Pre SBE 72-0481, SBE 72-0481 and Pre SBE 72-0487: Stage 3 Rotor Blades Clapper Checking Fixture

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedural steps to add repair reference. (19VG308)

Change Type:

Revised the procedural steps to add repair reference. (19VG078)

Change Type:

Revised support equipment, procedural steps and figures. (20VG156)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:0AM53
Tool Number:IAE 3R19815
Tool Name:IAE 3R19815 Clapper width checking fixture
Manufacturer Code:0AM53
Tool Number:IAE 3R19816
Tool Name:IAE 3R19816 Inspection jaws
Manufacturer Code:0AM53
Tool Number:IAE 3R19817
Tool Name:IAE 3R19817 Master blade
Manufacturer Code:LOCAL
Tool Number:Indicator tower
Tool Name:Indicator tower
Manufacturer Code:LOCAL
Tool Number:Transducer
Tool Name:Transducer