TASK 72-41-21-200-013-B00 HPC Stage 11 Case - Examine, Inspection-013

DMC:V2500-A0-72-41-2111-00B-300A-C|Issue No:002.00|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 72-41-21-200-013-B00 HPC Stage 11 Case - Examine, Inspection-013

Effectivity

FIG/ITEM

PART NO.

04-600

6A4328

General

This TASK gives the procedure for the inspection of the stage 11 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 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 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 72-41-21-230-149 Examine the Stage 11 Case for Cracks

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

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

        PART IDENT

        TASK/SUBTASK

        Stage 11 case

        SPM TASK

        TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-357 Examine the Stage 11 Case Front and Rear Flanges at Face Locations 1, 2, 1164 and 1165

    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 VRS6101, TASK 72-41-21-300-020 (REPAIR-020)

      3. Scored.

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

        1. Accept

        2. More than in Step

        1. Repair VRS6101, TASK 72-41-21-300-020 (REPAIR-020)

      4. Location 1164.

        1. If the diameter is between 21.298 and 21.303 in. (540.98 and 541.10 mm).

        1. Accept

        2. More than in Step

        1. Reject

      5. Location 1165.

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

        1. Accept

        2. More than in Step

        1. Reject

    3. SUBTASK 72-41-21-220-358 Examine the Stage 11 Case Bolt Holes at Locations 3 and 4

    1. Refer to Figure.

      2. Burred edges

      1. Repair, VRS6101 TASK 72-41-21-300-020

      3. Scored

      1. Repair, VRS6101 TASK 72-41-21-300-020

    4. SUBTASK 72-41-21-220-359 Examine the Stage 11 Case Holes at Locations 5, 6, 1199 and 1163

    1. Refer to Figure.

      2. Location dowel hole 1199.

        1. Burred edges

        1. Repair, VRS6101 TASK 72-41-21-300-020

        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

      3. Stop location hole 1163.

        1. Burred edges

        1. Repair, VRS6101 TASK 72-41-21-300-020

        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

      4. Dowel holes 5 and 6.

        1. Burred edges

        1. Repair, VRS6101 TASK 72-41-21-300-020

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

        1. Accept

        3. More than is Step

        1. Reject

    5. SUBTASK 72-41-21-220-360 Examine the Stage 11 Case Shank Nuts at Location 7 and 8

    1. Refer to Figure.

      2. Loose

      1. Repair, VRS6219 TASK 72-41-21-300-033

      3. Damaged

      1. Repair, VRS6219 TASK 72-41-21-300-033

        2. Measure the run-down torque.

          1. If the run-down torque is between 36 to 45 lbfin (4.00 to 5.00 Nm)

          1. Accept

          2. If the run-down torque is more or less than in Step

          1. Repair, VRS6219 TASK 72-41-21-300-033

    6. SUBTASK 72-41-21-220-361 Examine the Stage 11 Case Location Dowel at Locations 1183 and 1184

    1. Refer to Figure.

      2. Loose

      1. Reject

        2. Outer diameter.

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

          1. Accept

          2. Less than in Step

          1. Reject

    7. SUBTASK 72-41-21-220-362 Examine the Stage 11 Case Borescope Access Hole at Location 9

    1. Refer to Figure.

      2. Burred edges

      1. Repair VRS6101, TASK 72-41-21-300-020 (REPAIR-020)

      3. Scratched

      1. Repair VRS6101, TASK 72-41-21-300-020 (REPAIR-020)

      4. Loose rivets

      1. Repair VRS6352, TASK 72-41-21-300-081 (REPAIR-081)

    8. SUBTASK 72-41-21-220-363 Examine the Stage 11 Case Surface Protection

      1. Damage

      1. Accept

    9. SUBTASK 72-41-21-220-364 Examine the Stage 11 Case Remaining Surfaces

      1. Nicked, galled or scored.

        1. Up to 0.002 in. (0.05 mm)

        1. Accept

        2. More than in Step

        1. Repair, VRS6101 TASK 72-41-21-300-020

    10. Figure: Stage 11 case - inspection locations

    Stage 11 case - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised inspection criteria. (18VG258)