TASK 72-41-21-200-018 HPC Heatshields - Examine The Stage 7, 9, And 10 Heatshields, Inspection-018

DMC:V2500-A0-72-41-2140-01A-300A-C|Issue No:002.00|Issue Date:2019-11-01

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 72-41-21-200-018 HPC Heatshields - Examine The Stage 7, 9, And 10 Heatshields, Inspection-018

Effectivity

FIG/ITEM PART NO.

03-180

6A3022

03-180

6A4570

03-880

6A3028

03-880

6A3993

03-880

6A4259

03-880

6A6506

03-920

6A3029

03-920

6A4261

03-920

6A6507

03-920

6A7567

04-450

6A3029

04-450

6A4262

04-450

6A6508

04-500

6A3030

04-500

6A4263

04-500

6A6509

04-500

6A7568

General

This TASK gives the procedure for the inspection of the stage 7, 9 and 10 heatshields.

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 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.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

The procedure for the parts which must have a crack test is given in SUBTASK 72-41-23-230-069. 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 repairs have been completed satisfactorily.

The practices and processes referred to in the procedure by the TASK/SUBTASK number are in SPM.

References

Refer to 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 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 72-41-21-230-069 Examine the Stage 7, 9 and 10 Heatshields for Cracks

    1. NOTE

      For the method to clean the part refer to SPM TASK 70-11-03-300-501.

      Clean the parts. Refer to TASK 72-41-23-100-000 (CLEANING-000).

      2. Do the test for cracks on the parts that are given below.

        PART IDENT TASK/SUBTASK

        Stage 7, 9 and 10 heatshields

        SPM TASK

        TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-170-A00 Examine the Stage 7, 9 and 10 Heatshields Faces at Locations 1160, 1168, 1171 and 1156 (Pre SBE 72-0477)

    1. Refer to Figure.

      2. Scored.

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

        1. Accept

        2. More than in Step

          1. Fig/item (03-180)

          1. Repair, VRS6301 TASK 72-41-21-300-064 (REPAIR-064)

          2. Fig/item (03-880)

          1. Repair, VRS6307 TASK 72-41-21-300-065 (REPAIR-065)**

          3. Fig/item (03-920 and 04-450)

          1. Repair, VRS6310 TASK 72-41-21-300-066 (REPAIR-066)

          4. Fig/item (04-500)

          1. Repair, VRS6337 TASK 72-41-21-300-067 (REPAIR-067)

      3. Galled.

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

        1. Accept

        2. More than in Step

        1. Reject

    3. SUBTASK 72-41-21-220-170-B00 Examine the Stage 7, 9 and 10 Heatshields Faces at Locations 1160, 1168, 1171 and 1156

    1. Refer to Figure.

    2. SBE 72-0477: Engine - HP Compressor Ring Cases - Deletion of stage 8 to 11 Heatshields

      3. Scored.

        1. Up to 0.030 in. (0.75 mm.) in depth

        1. Accept

        2. More than in Step

        1. Reject

    4. SUBTASK 72-41-21-220-171 Examine the Stage 7, 9 and 10 Heatshields Faces at Locations 1162, 1176, 1169, 1174 and 1181

    1. Refer to Figure.

      2. Scored.

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

        1. Accept

        2. More than in Step

          1. Fig/item (03-180)

          1. Repair, VRS6301 TASK 72-41-21-300-064 (REPAIR-064)

          2. Fig/item (03-880)

          1. Repair, VRS6307 TASK 72-41-21-300-065 (REPAIR-065)**

          3. Fig/item (03-920 and 04-450)

          1. Repair, VRS6310 TASK 72-41-21-300-066 (REPAIR-066)

          4. Fig/item (04-500)

          1. Repair, VRS6337 TASK 72-41-21-300-067 (REPAIR-067)

    5. SUBTASK 72-41-21-220-172 Examine the Stage 7, 9 and 10 Heatshields Bolt Holes at Locations 1149, 1153, 1170, 1157 and 1144 and (Pre SBE 72-0296)

    1. Refer to Figure and Figure.

      2. Burred edges

        1. Fig/item (03-180)

        1. Repair, VRS6301 TASK 72-41-21-300-064 (REPAIR-064)

        2. Fig/item (03-880)

        1. Repair, VRS6307 TASK 72-41-21-300-065 (REPAIR-065)**

        3. Fig/item (03-920 and 04-450)

        1. Repair, VRS6310 TASK 72-41-21-300-066 (REPAIR-066)

        4. Fig/item (04-500)

        1. Repair, VRS6337 TASK 72-41-21-300-067 (REPAIR-067)

      3. Worn.

        1. Within the limits in Figure Pre SBE 72-0296

        1. Accept

        2. More than in Step

          1. Fig/item (03-880)

          1. Repair, VRS6633 TASK 72-41-21-300-090 (REPAIR-090)

          2. Fig/item (03-920)

          1. Reject

          3. Fig/item (04-450)

          1. Reject

          4. Fig/item (04-500)

          1. Reject

    6. SUBTASK 72-41-21-220-492 Examine the Stage 7, 9 and 10 Heatshields Bolt Holes at Locations 1149, 1153, 1170, 1157 and 1144 (SBE 72-0296)

    1. Refer to Figure.

    2. SBE 72-0296Engine - HP Compressor - Introduction of Integral front support cone/stage 7 rotor path and revised heatsheild and fastener configuration

      3. Wear

        1. If the diameter is between 0.2000 to 0.1960 in. (5.10 mm to 4.98 mm)

        1. Accept

        2. If the diameter is more than in Step

        1. Repair

          2. Fig/item (03-880)

          1. Repair, VRS6633 TASK 72-41-21-300-090 (REPAIR-090)

          3. Fig/item (03-920)

          1. Reject

          4. Fig/item (04-450)

          1. Reject

          5. Fig/item (04-500)

          1. Reject

    7. SUBTASK 72-41-21-220-583 Examine the Stage 10 Heatshield Hole at Location 1270 (SBE 72-0343)

    1. Refer to Figure.

    2. SBE 72-0343Engine - HP Compressor ring cases - Introduction of integal HP Compressor cases and rotor paths

      3. Wear

        1. If the diameter is between 0.3100 to 0.3200 in. (8.00 mm to 8.8 mm)

        1. Accept

        2. If the diameter is more than in Step

        1. Reject

    8. SUBTASK 72-41-21-220-173 Examine the Stage 7, 9 and 10 Heatshields Rivets at Location 1 and 2

    1. Refer to Figure.

      2. Rivets that are damaged, loose or not there

        1. Fig/item (03-180)

        1. Repair, VRS6302 TASK 72-41-21-300-068 (REPAIR-068)

        2. Fig/item (03-880)

        1. Repair, VRS6308 TASK 72-41-21-300-069 (REPAIR-069)

        3. Fig/item (03-920 and 04-450)

        1. Repair, VRS6311 TASK 72-41-21-300-070 (REPAIR-070)

        4. Fig/item (04-500)

        1. Repair, VRS6336 TASK 72-41-21-300-082 (REPAIR-082)

    9. SUBTASK 72-41-21-220-290 Examine the Stage 7, 9 and 10 Heatshields End Plates, at Location 3

    1. Refer to Figure.

      2. Burred, scored or galled.

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

        1. Accept

        2. More than in Step

          1. Fig/item (03-180)

          1. Repair, VRS6302 TASK 72-41-21-300-068 (REPAIR-068)

          2. Fig/item (03-880)

          1. Repair, VRS6308 TASK 72-41-21-300-069 (REPAIR-069)

          3. Fig/item (03-920 and 04-450)

          1. Repair, VRS6311 TASK 72-41-21-300-070 (REPAIR-070)

          4. Fig/item (04-500)

          1. Repair, VRS6336 TASK 72-41-21-300-082 (REPAIR-082)

    10. SUBTASK 72-41-21-220-174 Examine the Stage 7, 9 and 10 Heatshields for Heat Damage

    1. Refer to Figure.

      2. Overheated.

        1. Light straw colored up to 50 percent of the total area

        1. Accept

        2. Light straw colored on more than 50 percent of the total area

        1. Reject

        3. More than light straw colored

        1. Reject

    11. SUBTASK 72-41-21-220-206 Examine the Stage 7, 9 and 10 Heatshields all Remaining Surfaces

      1. Nicked, dented, scratched and galled.

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

        1. Accept

        2. More than in Step

          1. Fig/item (03-180)

          1. Repair, VRS6301 TASK 72-41-21-300-064 (REPAIR-064)

          2. Fig/item (03-880)

          1. Repair, VRS6307 TASK 72-41-21-300-065 (REPAIR-065)**

          3. Fig/item (03-920 and 04-450)

          1. Repair, VRS6310 TASK 72-41-21-300-066 (REPAIR-066)

          4. Fig/item (04-500)

          1. Repair, VRS6337 TASK 72-41-21-300-067 (REPAIR-067)

    12. SUBTASK 72-41-21-380-090 Re-apply the surface protection

      1. Fig/item (03-180).

      1. Repair, VRS6303 TASK 72-41-21-300-072 (REPAIR-072).

      2. Fig/item (03-880).

      1. Repair, VRS6309 TASK 72-41-21-300-073 (REPAIR-073).

      3. Fig/item (04-500).

      1. Repair, VRS6335 TASK 72-41-21-300-083 (REPAIR-083)**.

    13. Figure: Stage 7, 9 and 10 heatshields - inspection locations

    Stage 7, 9 and 10 heatshields - inspection locations

    Figure: Stage 7, 9 and 10 heatshields - inspection locations

    Stage 7, 9 and 10 heatshields - inspection locations

    Figure: Wear limits on heatshield bolt holes Pre SBE 72-0296

    Wear limits on heatshield bolt holes Pre SBE 72-0296

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Deleted step. (19VG241)