TASK 72-41-21-200-010-C00 HPC Stage 10 Case - Examine, Inspection-010

DMC:V2500-A0-72-41-2110-00A-300A-C|Issue No:003.00|Issue Date:2020-02-01

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 72-41-21-200-010-C00 HPC Stage 10 Case - Examine, Inspection-010

Effectivity

FIG./ITEM

PART NO.

03-800

6A6550

General

This TASK gives the procedure for the inspection of the stage 10 rotor path case assembly.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service bulletin alpha variant 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 the parts which must have a crack test is given in Step. Do the crack test before a 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 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:

Methods 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 72-41-21-230-220 Examine the Stage 10 Rotor Path Case Assembly for Cracks

    1. Refer to Figure.

      2. Clean the parts.

      1. Refer to TASK 72-41-21-100-000 (CLEANING-000).

      3. Do the test for cracks on the part that is given below.

        PART IDENT

        TASK/SUBTASK

        Stage 10 Rotor Path Case Assembly

        1. Cracked.

          1. At Location 8.

          1. Refer to Step.

          2. Cracked at any location other than Step.

          1. Reject.

    2. SUBTASK 72-41-21-220-559 Examine the Stage 10 Rotor Path Case Assembly Front and Rear Flanges at Locations 1, 2, 7 and 1177

    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. Repair, VRS6097 TASK 72-41-21-300-013 (RERAIR-013).

      3. Scored.

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

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

      4. Location 1177.

        1. If the diameter is not less than 21.344 in. (542.13 mm) and not more than 21.348 in. (542.25 mm).

        1. Accept.

        2. More than in Step.

        1. Reject.

      5. Location (Diameter) 7.

        1. If the diameter is not less than 22.4764 in. (570.90 mm) and not more than 22.4843 in. (571.10 mm).

        1. Accept.

        2. Less than in Step.

        1. Reject.

    3. SUBTASK 72-41-21-220-560 Examine the Stage 10 Rotor Path Case Assembly Boltholes at Locations 3 and 4

    1. Refer to Figure.

      2. Burred edges.

      1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

      3. Scored.

      1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

    4. SUBTASK 72-41-21-220-561 Examine the Stage 10 Rotor Path Case Assembly Holes at Locations 5, 6, 1193 and 1155

    1. Refer to Figure.

      2. Dowel holes 5 and 6.

        1. Burred edges.

        1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

        2. If the diameter is between 0.220 in. and 0.232 in. (5.60 mm and 5.90 mm).

        1. Accept.

        3. If the diameter is more than in Step.

        1. Reject.

      3. Location dowel hole 1193.

        1. Burred edges.

        1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

        2. If the diameter is between 0.315 in. and 0.316 in. (8.00 mm and 8.022 mm).

        1. Accept.

        3. If the diameter is more than in Step.

        1. Reject.

      4. Stop location hole 1155.

        1. Burred edges.

        1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

        2. If the diameter is between 0.2504 in. and 0.2535 in. (6.360 mm and 6.440 mm).

        1. Accept.

        3. If the diameter is more than in Step.

        1. Reject.

    5. SUBTASK 72-41-21-220-562 Examine the Stage 10 Rotor Path Case Assembly Spacers at Location 9

    1. Refer to Figure.

      2. Loose.

      1. Repair, VRS6252 TASK 72-41-21-300-039 (REPAIR-039).

      3. Spacers that are not there.

      1. Repair, VRS6252 TASK 72-41-21-300-039 (REPAIR-039).

        2. Wear at Location 9.

          1. If the diameter is between 0.316 in. and 0.317 in. (8.02 mm and 8.04 mm).

          1. Accept.

          2. Less than in Step.

          1. Repair, VRS6252 TASK 72-41-21-300-081 (REPAIR-039).

    6. SUBTASK 72-41-21-220-563 Examine the Stage 10 Rotor Path Case Assembly Location Dowel at Locations 1195 and 1196

    1. Refer to Figure.

      2. Loose.

      1. Repair, VRS6251 TASK 72-41-21-300-014 (REPAIR-014).

      3. Outer diameter.

        1. If the outer diameter is between 0.303 in. and 0.305 in. (7.70 mm and 7.75 mm).

        1. Accept.

        2. If the outer diameter is less than in Step.

        1. Repair, VRS6251 TASK 72-41-21-300-014 (REPAIR-014).

    7. SUBTASK 72-41-21-220-564 Examine the Stage 10 Rotor Path Case Assembly Borescope Access Hole at Location 8

    1. Refer to Figure.

      2. Burred edges.

      1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

      3. Scored.

      1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

      4. Loose rivets.

      1. Repair, VRS6162 TASK 72-41-21-300-028 (REPAIR-028).

      5. Cracked.

        1. Not more than two cracks between the borescope access hole and any two rivet holes. If there are two cracks, the cracks must not be on the same hole or on any adjacent holes.

        1. Accept.

        2. More than in Step.

        1. Reject.

    8. SUBTASK 72-41-21-220-565 Examine the Stage 10 Rotor Path Case Assembly Lining at Location 1053

    1. Refer to Figure.

      2. Scored.

        1. Not more than 0.005 in. (0.13 mm) in depth.

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6022 TASK 72-41-21-300-016 (REPAIR-016).

      3. Chipped,

      1. Repair, VRS6022 TASK 72-41-21-300-016 (REPAIR-016).

      4. Worn.

        1. If the radius is between 10.3230 in. and 10.3270 in. (262.204 mm and 262.306 mm).

        1. Accept.

        2. More than 10.3270 in. (262.306 mm).

        1. Repair, VRS6022 TASK 72-41-21-300-016 (REPAIR-016).

    9. SUBTASK 72-41-21-220-566 Examine the Stage 10 Rotor Path Case Assembly Face at Location 1110

    1. Refer to Figure.

      2. Galled/Scored.

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

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6098 TASK 72-41-21-300-015 (REPAIR-015).

      3. Location 1110.

        1. If the diameter is between 21.350 in. and 21.355 in. (542.30 mm and 542.42 mm).

        1. Accept.

        2. Less than 21.350 in. (542.30 mm).

        1. Reject.

    10. SUBTASK 72-41-21-220-567 Examine the Stage 10 Rotor Path Case assembly Grooves at Locations 1131 and 1134

    1. Refer to Figure.

      2. Scored/Galled.

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

        1. Accept.

        2. More than in Step.

        1. Reject.

      3. Location 1131.

        1. If the width of the groove is between 0.135 in. and 0.137 in. (3.43 mm and 3.49 mm).

        1. Accept.

        2. More than 0.137 in. (3.49 mm).

        1. Reject.

      4. Location 1134.

        1. If the width of the groove is between 0.115 in. and 0.119 in. (2.93 mm and 3.01 mm).

        1. Accept.

        2. More than 0.119 in. (3.01 mm).

        1. Reject.

    11. SUBTASK 72-41-21-220-569 Examine the Stage 10 Rotor Path Case Assembly Surface Protection

    1. Refer to Figure.

      2. Damaged.

      1. Accept.

    12. SUBTASK 72-41-21-220-568 Examine the Stage 10 Rotor Path Case Assembly Remaining Surfaces

    1. Refer to Figure.

      2. Nicked/Galled/Scored.

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

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6097 TASK 72-41-21-300-013 (REPAIR-013).

    13. Figure: Stage 10 Rotor Path Case Assembly - Inspection Locations

    Stage 10 Rotor Path Case Assembly - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised inspection criteria. (18VG258)