TASK 75-24-47-200-402 HPT/LPT Active Clearance Control (ACC) Ducts - Related Parts - Examine The Heat Shield Assembly, Inspection-002

DMC:V2500-A0-75-24-4700-01A-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 75-24-47-200-402 HPT/LPT Active Clearance Control (ACC) Ducts - Related Parts - Examine The Heat Shield Assembly, Inspection-002

Effectivity

FIG/ITEM

PART NO.

01-190

2A1481

General

This TASK gives the procedure for the inspection of the heat shield assembly. For the other HP/LP ACC duct parts, refer to Inspection-000 TASK 75-24-47-200-400.

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 visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

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 could be shown to be necessary at a later date.

All 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:

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 75-24-47-230-052 Examine the Heat Shield Assembly for Cracks

    1. Clean the parts. Refer to Cleaning-000 TASK 75-24-47-100-400.

      2. Do the crack test on the parts that are given below.

        1. Heat shield assembly

          1. Cracked

          1. Repair, VRS1510 (Repair-004) TASK 75-24-47-300-004.

    2. SUBTASK 75-24-47-220-054 Examine the Heat Shield Assembly

    1. Refer to Figure.

      2. Examine the foil at location 1

        1. Distorted

          1. Not more than 0.16 in. (4.0 mm) in surface flatness.

          1. Accept

          2. More than in Step.

          1. Reject

        2. Failed tack weld

        1. Repair, VRS1510 (Repair-004) TASK 75-24-47-300-004.

        3. Cracked

        1. Repair, VRS1510 (Repair-004) TASK 75-24-47-300-004.

        4. Broken

          1. Total damaged areas are less than or equal to 20 percent of surface

          1. Repair, VRS1510 (Repair-004) TASK 75-24-47-300-004.

          2. More than in Step.

          1. Reject

      3. Examine the sheet plate at location 2

        1. Dented

          1. Not more than 0.04 in. (1.0 mm) in depth.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1509 (Repair-003) TASK 75-24-47-300-003.

        2. Distorted

          1. Not more than 0.04 in. (1.0 mm) in depth.

          1. Accept

          2. More than in Step.

          1. Repair, VRS1509 (Repair-003) TASK 75-24-47-300-003.

        3. Cracked

        1. Repair, VRS1509 (Repair-003) TASK 75-24-47-300-003.

    3. Figure: Inspection of the ACC Heat Shield Assembly

    Inspection of the ACC Heat Shield Assembly

Requirements After Job Completion

Follow-On Conditions

NONE