TASK 72-41-21-200-019-B00 HPC Heatshields - Examine The Stage 8 And 11 Heatshields, Inspection-019

DMC:V2500-A0-72-41-2140-02B-300A-C|Issue No:001.00|Issue Date:2013-11-01

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 72-41-21-200-019-B00 HPC Heatshields - Examine The Stage 8 And 11 Heatshields, Inspection-019

Effectivity

FIG/ITEM PART NO.

03-900

6A3978

04-520

6A3979

General

This TASK gives the procedure for the inspection of the stage 8 and 11 heatshields. For the other parts of the HP compressor ring cases, refer to TASK 72-41-21-200-000 (INSPECTION-000).

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.

A ** following a 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 TASK 72-41-21-200-019-A00, SUBTASK 72-41-21-230-070. 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 the 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, TASK 70-02-02-350-501

Record and Control of the Lives of Parts, TASK 70-05-00-220-501

Inspection of Parts, TASK 72-20-01-200-501

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 72-41-21-230-116 Examine the Stage 8 and 11 Heatshields for Cracks

    1. Refer to Figure.

      NOTE

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

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

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

        PART IDENT TASK/SUBTASK

        Stage 8 and 11 heatshields

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-272 Examine the Stage 8 and 11 Heatshields Borescope Hole at Location 1

    1. Refer to Figure.

      2. Burred edges on the stage 8 heatshield (03-900) borescope hole.

      1. Repair, VRS6290, TASK 72-41-21-300-057 (REPAIR-057)

      3. Burred edges on the stage 11 heatshield (04-520) borescope hole.

      1. Repair, VRS6304, TASK 72-41-21-300-058 (REPAIR-058)**

      4. Elongated.

      1. Reject

    3. SUBTASK 72-41-21-220-273 Examine the Stage 8 and 11 Heatshields for Heat Damage

      1. 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

    4. SUBTASK 72-41-21-220-274 Examine the Stage 8 and 11 Heatshields Faces at Locations 2 to 4

    1. Refer to Figure.

      2. Dents on faces 2 and 3.

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

        1. Accept

        2. More than in Step

        1. Reject

      3. Dents on face 4.

        1. Up to 0.250 in. (6.35 mm) in depth

        1. Accept

        2. More than in Step

        1. Reject

      4. Distorted.

      1. Reject

    5. SUBTASK 72-41-21-380-107 Re-apply the Surface Protection

      1. Re-apply the surface protection to the stage 8 heatshield (03-900).

      1. Repair, VRS6489 TASK 72-41-21-300-088 (REPAIR-088)**

      2. Re-apply the surface protection to the stage 11 heatshield (04-520).

      1. Repair, VRS6512 TASK 72-41-21-300-089 (REPAIR-089)**

    6. Figure: Stage 8 and 11 heatshields - inspection locations

    Stage 8 and 11 heatshields - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE