TASK 72-41-15-200-003-B00 HPC Stage 5 Rotor Blade - Examine, Inspection-003

DMC:V2500-A0-72-41-1505-00B-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

V2500-A5

Common Information

TASK 72-41-15-200-003-B00 HPC Stage 5 Rotor Blade - Examine, Inspection-003

Effectivity

FIG/ITEM

PART NO.

ASSEMBLY

01-800

6A4198

A

Deleted

Deleted

Deleted

01-800

6A8451

A

01-800

6B1346

B

General

This TASK gives the procedure for the inspection of the HP compressor stage 5 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 the 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 must 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 the SPM.

References

Refer to the 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 the 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 72-41-15-230-095 Examine the Stage 5 Rotor Blades for Cracks

    1. Refer to Figure and Figure.

      NOTE

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

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

      3. Do the fluorescent penetrant inspection for cracks.

        PART IDENT

        TASK/SUBTASK

        Stage 5 Rotor Blades

        1. Leading edge (Location 3).

          1. Cracked.

          1. Refer to Step.

        2. Airfoil tips (Location 1048).

          1. Cracked.

          1. Refer to Step.

        3. Groove (Location 1014).

          1. Cracked.

          1. Reject. Reject the cracked blade and the full stage 5 rotor blade set from which it was assembled with.

        4. Dovetail (location 10) 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 11).

          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 72-41-15-220-252 Examine the Stage 5 Rotor Blades Concave and Convex Airfoil Surfaces at Locations 1 and 2

    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, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

      3. Eroded.

      1. Repair, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

      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.

    3. SUBTASK 72-41-15-220-253-001 Examine the Stage 5 Rotor Blades Concave and Convex Airfoil Surface Finish at Locations 1 and 2 (Pre SBE 70-0714, SBE 70-0726, SBE 72-0490 and SBE 72-0587)

    1. Refer to Figure.

      2. Mean surface finish of 16 microinches (0.40 micrometers) or less.

      1. Accept.

      3. Mean surface finish greater than 16 microinches (0.40 micrometers).

      1. Repair, VRS6150 TASK 72-41-15-300-040 (REPAIR-040).

    4. SUBTASK 72-41-15-220-253-002 Examine the Stage 5 Rotor Blades Concave and Convex Airfoil Surface Finish at Locations 1 and 2 (SBE 72-0560 and SBE 72-0587)

    1. Refer to Figure.

      2. Mean surface finish of 10 microinches (0.25 micrometers) or less.

      1. Accept.

      3. Mean surface finish greater than 10 microinches (0.25 micrometers).

      1. Repair, VRS6150 TASK 72-41-15-300-040 (REPAIR-040).

    5. SUBTASK 72-41-15-220-254 Examine the Stage 5 Rotor Blades Leading Edge at Location 3

    1. Refer to Figure.

      2. Cracked.

      1. Repair, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

      3. Nicks or dents.

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

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

      4. Eroded.

      1. Repair, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

    6. SUBTASK 72-41-15-220-255 Examine the Stage 5 Rotor Blades Trailing Edge at Location 4

    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, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

      3. Eroded.

      1. Repair, VRS6011 TASK 72-41-15-300-003 (REPAIR-003).

    7. SUBTASK 72-41-15-220-256 Examine the Stage 5 Rotor Blades Tips at Location 1048

    1. Refer to Figure.

      2. Cracked.

      1. Repair, VRS6051 TASK 72-41-15-300-013 (REPAIR-013) 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, VRS6051 TASK 72-41-15-300-013 (REPAIR-013) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

    8. SUBTASK 72-41-15-220-257 Examine the Stage 5 Rotor Blades Groove at Location 1014

    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. (2.58 mm and 2.68 mm).

        1. Accept.

        2. More than in Step.

        1. Reject.

    9. SUBTASK 72-41-15-220-258 Examine the Stage 5 Rotor Blades Dovetail at Location 5 (All Other Remaining Faces and/or Areas on Dovetail Excluding the Areas Addressed in Step)

    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.

        1. Accept.

        2. If stylus hesitates or catches.

        1. Reject.

      3. Galled.

      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.

    10. SUBTASK 72-41-15-220-259 Examine the Stage 5 Rotor Blades Dovetails at Locations 10 and 11

      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.

      2. Location 10 - dovetail top edge of bedding.

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

        1. Reject.

      3. Location 11 - 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.

    11. SUBTASK 72-41-15-220-260 Examine the Stage 5 Rotor Blades Cheeks at Locations 6 and 7

    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. 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.

    12. SUBTASK 72-41-15-220-615 Examine the Stage 5 Rotor Blades Front and Rear Lip at Location 12

    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.

    13. SUBTASK 72-41-15-220-261 Examine the Stage 5 Rotor Blades Platform at Location 8

    1. Refer to Figure.

      2. Nicks or dents.

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

          1. Not more than 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.

    14. SUBTASK 72-41-15-220-427 Examine the Stage 5 Rotor Blades Platform Surface Finish at Location 8 (SBE 72-0560 and SBE 72-0587)

    1. Refer to Figure.

      2. Mean surface finish of 16 microinches (0.40 micrometers) or less.

      1. Accept.

      3. Mean surface finish greater than 16 microinches (0.40 micrometers).

      1. Repair, VRS6150 TASK 72-41-15-300-040 (REPAIR-040).

    15. SUBTASK 72-41-15-220-262 Examine the Stage 5 Rotor Blades Root 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. Reject.

      3. Scored.

        1. 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 chord.

          1. Accept.

          2. If stylus hesitates or catches on the chord.

          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.

    16. SUBTASK 72-41-15-220-263 Examine the Stage 5 Rotor Blades 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.

    17. SUBTASK 72-41-15-220-456 Examine the Stage 5 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 and Figure.

    2. Measure blade length "X".

      3. Between 3.2810 in. and 3.2890 in. (83.337 mm and 83.541 mm).

      1. Accept.

      4. Between 3.2520 in. and 3.2800 in. (82.616 mm and 83.312 mm).

      1. Repair, VRS6051 TASK 72-41-15-300-013 (REPAIR-013) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

      5. Less than the minimum repair limit given in Repair, VRS6051 TASK 72-41-15-300-013 (REPAIR-013) or Repair, VRS6534 TASK 72-41-15-300-055 (REPAIR-055).

      1. Reject.

    18. SUBTASK 72-41-15-380-099 Apply the Dry Film Lubricant to the Stage 5 Rotor Blades Dovetails

      1. Apply the dry film lubricant to the blade dovetail

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

    19. SUBTASK 72-41-15-350-128 Replace the Sealing Strip on to the Stage 5 Rotor Blades

      1. Replace the blades sealing strip

      1. Refer to Repair, VRS6215 TASK 72-41-15-300-032 (REPAIR-032)

    20. Figure: Stage 5 Rotor Blades - Inspection Locations and Orientation

    Stage 5 Rotor Blades - Inspection Locations and Orientation

    Figure: Stage 5 Rotor Blades - Inspection Locations and Orientation

    Stage 5 Rotor Blades - Inspection Locations and Orientation

    Figure: Stage 5 Rotor Blades - Chordal Checks

    Stage 5 Rotor Blades - Chordal Checks

    Figure: Pre SBE 72-0490: Stage 5 Rotor Blades

    Pre SBE 72-0490: Stage 5 Rotor Blades

    Figure: SBE 72-0490, SBE 72-0560 and SBE 72-0587: Stage 5 Rotor Blades

    SBE 72-0490, SBE 72-0560 and SBE 72-0587: Stage 5 Rotor Blades

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

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

Change Type:

Revised effectivity table, procedure and figure. (20VG156)