TASK 72-41-21-200-010-B00 HPC Stage 9 Case - Examine, Inspection-010

DMC:V2500-A0-72-41-2109-00B-300A-C|Issue No:003.00|Issue Date:2020-08-01

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-B00 HPC Stage 9 Case - Examine, Inspection-010

Effectivity

FIG/ITEM

PART NO.

03-800

6A4326

03-800

6A6511

General

This TASK gives the procedure for the inspection of the stage 9 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 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 TASK 72-41-21-200-010-A00, SUBTASK 72-41-21-230-060. 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:

Definitions 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:

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 72-41-21-230-163 Examine the Stage 9 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 9 case

        SPM TASK

        TASK 70-23-02-230-501

        1. Cracked.

        1. Reject.

    2. SUBTASK 72-41-21-220-398 Examine the Stage 9 Case Front and Rear Flanges at Locations 1, 2, 1175 and 1177

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

      3. Scored.

        1. Up to 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. Locations 1175 and 1177.

        1. If the diameter is between 21.344 to 21.348 in. (542.13 to 542.25 mm).

        1. Accept.

        2. More than in Step

        1. Reject

    3. SUBTASK 72-41-21-220-399 Examine the Stage 9 Case Bolt Holes 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 72-41-21-220-400 Examine the Stage 9 Case 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 to 0.232 in. (5.60 to 5.90 mm)

        1. Accept

        3. 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 to 0.316 in. (8.00 to 8.02 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 to 0.2535 in. (6.360 to 6.440 mm)

        1. Accept

        3. If the diameter is more than in Step

        1. Reject

    5. SUBTASK 72-41-21-220-401 Examine the Stage 9 Case Spacers at Location 7 and 9 (Pre SBE 72-0296)

    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 to 0.317 in. (8.02 to 8.04 mm)

          1. Accept

          2. Less than in Step

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

    6. SUBTASK 72-41-21-220-508 Examine the Stage 9 Case Spacers at Location 7 and 9 (SBE 72-0296)

    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)

    7. SUBTASK 72-41-21-220-402 Examine the Stage 9 Case 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 to 0.305 in. (7.70 to 7.75 mm)

        1. Accept

        2. If the outer diameter is less than Step

        1. Repair, VRS6251 TASK 72-41-21-300-079 (REPAIR-079)

    8. SUBTASK 72-41-21-220-403 Examine the Stage 9 Case 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)

    9. SUBTASK 72-41-21-220-404 Examine the Stage 9 Case Surface Protection

      1. Damaged

      1. Accept

    10. SUBTASK 72-41-21-220-405 Examine the Stage 9 Case Remaining Surfaces

      1. Nicked, galled or scored.

        1. Up to 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)

    11. Figure: Stage 9 case - inspection locations

    Stage 9 case - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Correct internal step references (CAS-71887-D2B2B0)