TASK 72-41-31-200-001-A00 HPC Stage 3 Rotor Path Segment - Examine, Inspection-001

DMC:V2500-A0-72-41-3113-00A-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 72-41-31-200-001-A00 HPC Stage 3 Rotor Path Segment - Examine, Inspection-001

Effectivity

FIG/ITEM PART NO.

01-685

6A3758

General

This TASK gives the procedure for the inspection of the stage 3 rotor path ring segments. For the other parts of the HP compressor front cases, refer to TASK 72-41-31-200-000 (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 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 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.

The segments must be kept as a set and examined as a full ring. If one segment is rejected then the set must be rejected.

References

Refer to the SPM for data on these items.

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

Inspection of Parts, 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.

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 72-41-31-230-051 Examine the Stage 3 Rotor Path Ring Segments for Cracks

    1. Clean the parts. Refer to TASK 72-41-31-100-000 (CLEANING-000).

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

        PART IDENT TASK/SUBTASK

        Stage 3 rotor path ring segments

        TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-41-31-220-052 Examine the Stage 3 Rotor Path Ring Segments Lining at Location 1

    1. Refer to Figure.

      2. Rotor path ring lining radius. Use the data written as a note in TASK 72-41-00-040-001-A00 (DISASSEMBLY, CONFIG-001).

        1. If the radius is between 11.0803 and 11.0842in. (281.440 and 281.539 mm)

        1. Accept

        2. More than 11.0842in. (281.539 mm)

        1. Repair, VRS6242 TASK 72-41-31-300-005 (REPAIR-005)

      3. Gouged

      1. Repair, VRS6242 TASK 72-41-31-300-005 (REPAIR-005)

      4. Chipped.

        1. Up to 0.100in. (2.54 mm) in length and 0.050in. (1.27 mm) in width at the split line provided there is no loss of adhesion to the backing material

        1. Accept

        2. More than in (1)

        1. Repair, VRS6242 TASK 72-41-31-300-005 (REPAIR-005)

      5. Scored.

        1. Up to 0.010in. (0.25 mm) in depth

        1. Accept

        2. More than in (1)

        1. Repair, VRS6242 TASK 72-41-31-300-005 (REPAIR-005)

    3. SUBTASK 72-41-31-220-053 Examine the Stage 3 Rotor Path Ring Segments Lands at Location 1209

    1. Refer to Figure.

      2. Scored or scratched.

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

        1. Accept

        2. More then in (1)

        1. Repair, VRS6031 TASK 72-41-31-300-003 (REPAIR-003)

      3. Worn.

        1. If the thickness of the land is between 0.115 to 0.117in. (2.925 to 2.975 mm)

        1. Accept

        2. Less than 0.115in. (2.925 mm)

        1. Reject

    4. SUBTASK 72-41-31-220-054 Examine the Stage 3 Rotor Path Ring Segments Faces at Locations 2 and 3

    1. Refer to:Figure.

      2. Scored or scratched.

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

        1. Accept

        2. More than in (1)

        1. Reject

    5. SUBTASK 72-41-31-220-144 Examine the Stage 3 Rotor Path Ring Segments Stop Faces at Location 4

    1. Refer to Figure.

      2. Worn.

        1. Up to 0.010in. (0.25 mm) in depth

        1. Accept

        2. Between 0.010 to 020in. (0.25 to 0.50 mm) in depth

        1. Mark the component with the symbol 'A' in a triangle next to the part number using vibro-engraving equipment Figure. Refer to the SPM TASK 70-09-00-400-501, SUBTASK 70-09-00-400-001.

    6. SUBTASK 72-41-31-220-102 Examine the Stage 3 Rotor Path Ring Segments all Remaining Surfaces

      1. Nicked, dented, scratched or burred.

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

        1. Accept

        2. More than in (1)

        1. Reject

    7. SUBTASK 72-41-31-220-126 Replace the Stage 3 Rotor Path Ring Segments Surface Protection

      1. Replace the surface protection

      1. Repair, VRS6295 TASK 72-41-31-300-016 (REPAIR-016)**

    8. Figure: Stage 3 rotor path ring segments - Inspection locations

    Stage 3 rotor path ring segments - Inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE