TASK 72-41-21-200-016 HPC Heatshields - Examine The Stage 12 Rotor Path LH And RH Heatshields, Inspection-016 - Pre SB 72-0280

DMC:V2500-A0-72-41-2140-00A-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 72-41-21-200-016 HPC Heatshields - Examine The Stage 12 Rotor Path LH And RH Heatshields, Inspection-016 - Pre SB 72-0280

Effectivity

FIG/ITEM PART NO.

04-800

6A3406

04-800

6A4265

04-800

6A6560

04-820

6A3405

04-820

6A4266

04-820

6A6561

General

SB 72-0280: Introduction of HP compressor system with stage 12 heatshields deleted.

This TASK gives the procedure for the inspection of the stage 12 rotor path LH and RH 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 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 Step. 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:

Definition of Damage, SPM TASK 70-02-02-350-501,

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

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 72-41-21-230-067 Examine the Stage 12 Rotor Path LH and RH Heatshields (04-800 and 04-820) 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 12 rotor path LH and RH

        TASK

        heatsheilds

        TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-21-220-160 Examine the Stage 12 Rotor Path LH and RH Heatshields (72-41-21,04-800) and (72-41-21,04-820) Faces at Locations 1 to 3

    1. Refer to Figure.

      2. Galled.

      1. Repair VRS6316, TASK 72-41-21-300-055 (REPAIR-055)

      3. Worn.

      1. Repair VRS6316, TASK 72-41-21-300-055 (REPAIR-055)

    3. SUBTASK 72-41-21-220-161 Examine the Stage 12 Rotor Path LH and RH Heatshields (04-800 and 04-820) Bolt Holes at Location 4

    1. Refer to Figure.

      2. Wear.

        1. If the diameter is between 0.220 to 0.232in. (5.588 to 5.893 mm)

        1. Accept

        2. More than in step 3.B.

        1. Reject

      3. Elongated.

      1. Reject

    4. SUBTASK 72-41-21-220-162 Examine the Stage 12 Rotor Path RH Heatshields (04-820) Location Slot at Location 5

    1. Refer to Figure.

      2. Wear.

        1. If the slot width is between 0.386 to 0.402in. (9.80 to 10.20 mm)

        1. Accept

        2. More than in step 4.B.(1)

        1. Reject

    5. SUBTASK 72-41-21-220-630 Examine the Stage 12 Rotor Path LH and RH Heatshields (72-41-21,04-800) and (72-41-21,04-820) Plates at Location 6

    1. Refer to Figure.

      2. Loose.

      1. Reject

      3. Plates that are not there.

      1. Reject

    6. Figure: Stage 12 rotor path LH and RH heatshields - inspection locations

    Stage 12 rotor path LH and RH heatshields - inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE