TASK 72-41-21-200-011-A00 HPC Stage 10 Case - Examine, Inspection-011

DMC:V2500-A0-72-41-2110-01A-300A-C|Issue No:004.00|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 72-41-21-200-011-A00 HPC Stage 10 Case - Examine, Inspection-011

Effectivity

FIG/ITEM

PART NO.

04-350

6A3389

04-350

6A5436

04-350

6A5676

General

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

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 variants refer to the EIPC.

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 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 is 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 72-41-21-230-062 Examine the Stage 10 Case for Cracks

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

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

        PART IDENT

        TASK/SUBTASK

        Stage 10 Case

        1. Cracked.

        1. Reject.

    2. SUBTASK 72-41-21-220-121 Examine the Stage 10 Case Front and Rear Flanges at Face Locations 1, 2, 1108 and 1109

    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. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

      3. Scored.

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

        1. Accept.

        2. More than in Step up.

        1. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

      4. Face 1108 and 1109.

        1. If the diameter is between 22.384 in. and 22.392 in. (568.55 mm and 568.75 mm).

        1. Accept.

        2. If the diameter is more than in Step.

        1. Reject.

    3. SUBTASK 72-41-21-220-122 Examine the Stage 10 Case Bolt Holes at Locations 3 and 4

    1. Refer to Figure.

      2. Burred edges.

      1. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

      3. Scored.

      1. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

    4. SUBTASK 72-41-21-220-123 Examine the Stage 10 Case Holes at Locations 1196 and 1159

    1. Refer to Figure.

      2. Location dowel hole 1196.

        1. Burred edges

        1. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

        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.

      3. Stop location hole 1159.

        1. Burred edges.

        1. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

        2. If the diameter is between 0.250 in. and 0.254 in. (6.36 mm and 6.44 mm).

        1. Accept.

        3. If the diameter is more than in Step.

        1. Reject.

    5. SUBTASK 72-41-21-220-124 Examine the Stage 10 Case Spacers at Locations 7, 8, 11 and 12

    1. Refer to Figure.

      2. Loose.

      1. Repair, VRS6253 TASK 72-41-21-300-040 (REPAIR-040).

      3. Spacers that are not there.

      1. Repair, VRS6253 TASK 72-41-21-300-040 (REPAIR-040).

        2. Wear at Location 11 and 12.

          1. If the diameter is between 0.3161 in. and 0.3164 in. (8.029 mm and 8.037 mm).

          1. Accept.

          2. Less than in Step.

          1. Repair, VRS6253 TASK 72-41-21-300-040 (REPAIR-040).

    6. SUBTASK 72-41-21-220-125 Examine the Stage 10 Case Location Dowel at Locations 1198 and 1199

    1. Refer to Figure.

      2. Loose.

      1. Reject.

      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. Reject.

    7. SUBTASK 72-41-21-220-126 Examine the Stage 10 Case Rivets at Location 9

    1. Refer to Figure.

      2. Loose.

      1. Repair, VRS6331 TASK 72-41-21-300-042 (Repair-042).

      3. Damaged.

      1. Repair, VRS6331 TASK 72-41-21-300-042 (Repair-042).

    8. SUBTASK 72-41-21-220-127 Examine the Stage 10 Case Sealing Ring at Location 10

    1. Refer to Figure.

      2. Binding.

        1. If the sealing ring can be moved by hand.

        1. Accept.

        2. If the sealing ring can not be moved by hand.

        1. Repair, VRS6331 TASK 72-41-21-300-042.

      3. Dimensionally measure the clearance between the sealing ring and the Stage 10 case.

        1. Up to 0.003 in. (0.08 mm).

        1. Accept.

        2. More than in Step.

        1. Repair, VRS6331 TASK 72-41-21-300-042 (Repair-042).

      4. Measure the sealing ring diameter.

        1. If the diameter is between 23.237 in. and 23.239 in. (590.22 mm and 590.27 mm).

        1. Accept.

        2. Less than in Step.

        1. Repair, VRS6331 TASK 72-41-21-300-042 (Repair-042).

    9. SUBTASK 72-41-21-220-129 Examine the Stage 10 Case Bores at Locations 1110 and 1111

    1. Refer to Figure.

      2. PRE SBE 72-0154: Dimensionally measure the diameter at Face 1110 and 1111.

        1. If the diameter is between 21.150 in. to 21.154 in. (537.21 mm to 537.31 mm).

        1. Accept.

        2. If the diameter is more than in Step.

        1. Reject.

      3. For PRE SBE 72-0182 and POST SBE 72-0182: Dimensionally measure the diameter at Face 1110 and 1111.

        1. If the diameter is between 21.150 in. to 21.154 in. (537.21 mm to 537.31 mm).

        1. Accept.

        2. If the diameter is more than in Step.

        1. Reject.

    10. SUBTASK 72-41-21-220-130 Examine the Stage 10 Case Surface Protection

      1. Damaged.

      1. Accept.

    11. SUBTASK 72-41-21-220-231 Examine the Stage 10 Case Remaining Surfaces

      1. Nicked, galled or scored.

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

        1. Accept.

        2. More than Step.

        1. Repair, VRS6099 TASK 72-41-21-300-017 (REPAIR-017).

    12. Figure: Stage 10 Case - Inspection Locations

    Stage 10 Case - Inspection Locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised inspection criteria. (18VG258)