TASK 72-00-00-200-001-A00 Engine General - Examine (Borescope) The LP Compressor (LPC), Inspection-001

DMC:V2500-A1-72-00-0000-03A-312A-B|Issue No:001.00|Issue Date:2014-05-01

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

V2500-A1

Common Information

TASK 72-00-00-200-001-A00 Engine General - Examine (Borescope) The LP Compressor (LPC), Inspection-001

General

This TASK gives the procedure for the borescope inspection of the LP compressor rotor blades.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 2J12030 Guide tube0AM53IAE 2J120301
IAE 6F10056 Borescope equipment, 4 mm or 6 mm, video borescope0AM53IAE 6F100561

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 06-069 MARKERIE207CoMat 06-069

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-00-00-490-051 Install the Support Equipment to Examine the Stage 1.5 Blades

    1. Refer to Figure and Figure.

      2. CAUTION

        BE CAREFUL DURING INSTALLATION AND REMOVAL OF THE GUIDE TUBE AS NOT TO CAUSE DAMAGE TO THE OUTER OR INNER OUTLET GUIDE VANES.

        Put the guide tube and borescope probe in position to examine the stage 1.5 blades.

      1. Put the IAE IAE 2J12030 Guide tube 1 off, in position through the fan frame strut, LP compressor outlet guide vanes and the LP compressor inlet guide vane at approximately the 3 O'clock position.

      2. Put the IAE IAE 6F10056 Borescope equipment, 4 mm or 6 mm, video borescope 1 off in to the guide tube until the stage 1.5 compressor blade can be examined.

    2. SUBTASK 72-00-00-220-097 Examine the Stage 1.5 LP Compressor Blades

      NOTE

      Do this operation with two persons: One person in the fan case to adjust the position of the guide tube and to turn the stage 1 fan blades.
      The other person at the right side of the engine to examine the compressor blades.

    1. Refer to Figure.

    2. Make a mark on a fan blade and the adjacent fan case using the CoMat 06-069 MARKER to identify the start position of the inspection.

    3. SUBTASK 72-00-00-220-098 Examine the Front Surface of each Stage 1.5 LP Compressor Blade

    1. Refer to Figure.

      2. Zone A.

        1. Cracked

        1. Reject

        2. Torn

        1. Reject

        3. Nicked

        1. Reject

        4. Dented

        1. Reject

      3. Zone B.

        1. Cracked

        1. Reject

        2. Torn

        1. Reject

        3. Leading or trailing edge

          1. Nicked.

            1. Up to 0.020 in. (0.50 mm) in depth

            1. Accept

          2. Dented.

            1. Up to 0.020 in. (0.50 mm) in depth

            1. Accept

      4. Zone C.

        1. Cracked

        1. Reject

        2. Torn

        1. Reject

        3. Leading or trailing edge blade tips

          1. Missing piece

          1. Reject

          2. NOTE

            The subsequent blade stages must be examined for damage if leading or trailing edge tips are not there.

            Overheated (related to tip rub)

          1. Reject

          3. Blade tips.

            1. Bent or curled (not related to cracks or tears) not more than 10 percent of chord length

            1. Accept

        4. Leading or trailing edges.

          1. Nicked.

            1. Up to 0.030 in. (0.76 mm) in depth

            1. Accept

          2. Dented.

            1. Up to 0.030 in. (0.76 mm) in depth

            1. Accept

    4. SUBTASK 72-00-00-090-051 Remove the Borescope Probe and Guide Tube

    1. Refer to Figure.

    2. Remove the borescope probe from the guide tube.

    3. Remove the guide tube from the LP compressor/intermediate case.

    5. SUBTASK 72-00-00-490-052 Install the Borescope Probe to Examine the Stage 2.5 Blades

    1. Refer to Figure and Figure.

    2. Put the borescope in position through the outlet port of the booster stage bleed valve at approximately the 6 O'clock position.

    3. Put the borescope in to the bleed duct until the stage 2.5 compressor blades can be examined.

    6. SUBTASK 72-00-00-220-099 Examine the Stage 2.5 LP Compressor Blades

      NOTE

      Do this operation with two persons: One person to turn the stage 1 fan blades. The other person at the right side of the engine to examine the LP compressor blades.

    1. Refer to Figure.

    2. Make a mark on a fan blade and adjacent fan case using the CoMat 06-069 MARKER to identify the start position of the inspection.

    7. SUBTASK 72-00-00-220-100 Examine the Rear Surface of each Stage 2.5 LP Compressor Blade

    1. Refer to Figure.

      2. Zone A.

        1. Cracked

        1. Reject

        2. Torn

        1. Reject

        3. Nicked

        1. Reject

        4. Dented

        1. Reject

      3. Zone B.

        1. Cracked

        1. Reject

        2. Torn

        1. Reject

        3. Leading or trailing edge

          1. Nicked.

            1. Up to 0.020 in. (0.50 mm) in depth

            1. Accept

          2. Dented.

            1. Up to 0.020 in. (0.50 mm) in depth

            1. Accept

      4. Zone C.

        1. Cracked

        1. Reject

        2. Torn

        1. Reject

        3. Leading or trailing edge blade tips

          1. Missing piece

          1. Reject

          2. NOTE

            The subsequent blade stages must be examined for damage if leading or trailing edge tips are not there.

            Overheated (related to tip rub)

          1. Reject

        4. Blade tips.

          1. Bent or curled (not related to cracks or tears) not more than 10 percent of chord length

          1. Accept

        5. Leading or trailing edges.

          1. Nicked.

            1. Up to 0.030 in. (0.76 mm) in depth

            1. Accept

          2. Dented.

            1. Up to 0.030 in. (0.76 mm) in depth

            1. Accept

    8. SUBTASK 72-00-00-090-052 Remove the Support Equipment

    1. Refer to Figure.

    2. Remove the borescope probe from the bleed duct.

    9. Figure: Borescope inspection equipment

    Borescope inspection equipment

    Figure: Borescope inspection for LP compressor stage 1.5 blade

    Borescope inspection for LP compressor stage 1.5 blade

    Figure: Borescope inspection for LP compressor stage 2.5 blade

    Borescope inspection for LP compressor stage 2.5 blade

    Figure: LP compressor stage 1.5 and 2.5 blade - Maximum serviceable limit

    LP compressor stage 1.5 and 2.5 blade - Maximum serviceable limit

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:IE207
Enterprise Name:DELETED, REFER TO 16956
Manufacturer Code:IE207
Supply Number:CoMat 06-069
Type:sp01
Supply Short Name:CoMat 06-069 MARKER
Supply Name:CoMat 06-069 MARKER
Specification Groups:
Doc NumberType
OMAT:262TMARKS-A-LOT
JCR-085MARKS-A-LOT
Suppliers:
ManufacturerRemarks
IE207
Manufacturer Code:0AM53
Tool Number:IAE 2J12030
Tool Name:IAE 2J12030 Guide tube
Manufacturer Code:0AM53
Tool Number:IAE 6F10056
Tool Name:IAE 6F10056 Borescope equipment, 4 mm or 6 mm, video borescope