TASK 72-32-82-200-004 LPC Stage 2.3 Blade - Examine, Inspection-004

DMC:V2500-A0-72-32-8223-00A-300A-C|Issue No:003.00|Issue Date:2020-05-01

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-A5

Common Information

TASK 72-32-82-200-004 LPC Stage 2.3 Blade - Examine, Inspection-004

Effectivity

FIG/ITEM

PART NO.

02-550

5A0865

General

This TASK gives the procedure for the inspection of the LP compressor stage 2.3 blades.

The policy that is necessary for inspection is given in SPM TASK 70-20-00-200-501.

All parts must be cleaned before any part is examined. Refer to SPM TASK 70-11-14-300-503.

All 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 those parts which must have a crack test is given in Step. Do the 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 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 the parts must be examined to make sure that all repairs have been completed satisfactorily.

The practices and processes referred to in the procedure by the TASK numbers are in SPM.

References

Refer to SPM for data on these items.

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

Inspection of Parts, SPM TASK 70-20-00-200-501

Some data on these items are contained in this TASK. For more data on these items refer to 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 72-32-82-230-065 Examine the LP Compressor Stage 2.3 Blades for Cracks

    1. Clean the parts. Refer to TASK 72-32-82-100-000 (CLEANING-000).

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

        PART IDENT

        TASK/SUBTASK

        LP compressor stage 2.3 blades

        1. Cracked

        1. Reject

    2. SUBTASK 72-32-82-220-103 Examine the LP Compressor Stage 2.3 Blade Airfoils

    1. Refer to Figure.

      2. Examine the tip at location 2.

        1. Rounded, eroded appearance on concave side tip

        1. Reject

        2. Blued or burn cratering on aerofoil tip

        1. Reject

        3. Nicked, dented and scratched

          1. Less than 0.002 in. (0.05 mm) in depth.

          1. Accept

          2. More than Step.

          1. Reject

      3. Examine the leading and trailing edges at location 1.

        1. Nicked and dented

        1. Repair, VRS1869 TASK 72-32-82-300-015 (REPAIR-015)

        2. Erosion

        1. Repair, VRS1869 TASK 72-32-82-300-015 (REPAIR-015)

      4. Examine the concave and convex airfoil surfaces at location 3.

        1. Nicked, dented and scratched

          1. Less than 0.002 in (0.05 mm) in depth.

          1. Accept

          2. More than Step.

          1. Repair, VRS1869 TASK 72-32-82-300-015 (REPAIR-015).

    3. SUBTASK 72-32-82-220-104 Examine the LP Compressor Stage 2.3 Blades Platform

    1. Refer to Figure.

      2. Examine the platform at location 8.

        1. Nicked and dented

        1. Repair, VRS1869 TASK 72-32-82-300-015 (REPAIR-015)

      3. Examine the front and rear faces at location 4.

        1. Nicked and dented

        1. Repair, VRS1869 TASK 72-32-82-300-015 (REPAIR-015)

      4. Examine the platform edge at location 9.

        1. Galled.

          1. Up to 0.005 in. (0.12 mm) in depth

          1. Accept

          2. More than in Step

          1. Reject

    4. SUBTASK 72-32-82-220-105 Examine the LP Compressor Stage 2.3 Blades Dovetail

    1. Refer to Figure and Figure.

      2. Examine the front and rear faces at location 6 and side face at location 10.

        1. Any nicks and dents

        1. Repair, VRS1869 TASK 72-32-82-300-015 (REPAIR-015)

      3. Examine the dovetail side face contact area at location 11.

        1. Fretted.

          1. Less than 0.001 in. (0.0254 mm) in depth

          1. Accept

          2. Less than 0.002 in. (0.05 mm) in depth

          1. Repair, VRS1377 TASK 72-32-82-300-017 (REPAIR-017)

        2. Galled

        1. Reject

        3. Nicked, dented and scratched

        1. Reject

    5. SUBTASK 72-32-82-220-106 Examine the LP Compressor Stage 2.3 Blades Groove

    1. Refer to Figure.

      2. Examine the groove at location 5.

        1. Worn, dented and scratched on depth of groove.

          1. Less than 0.008 in. (0.20 mm) and less than one third of platform width

          1. Accept

          2. More than in Step

          1. Reject

        2. Worn, dented and scratched on front and rear faces of groove.

          1. Less than 0.008 in. (0.20 mm) and less than one third of platform width.

          1. Accept

          2. More than in Step

          1. Reject

    6. SUBTASK 72-32-82-220-107 Examine the LP Compressor Stage 2.3 Blades Sealing Strip

    1. Refer to Figure.

      2. Examine the sealing strip.

        1. Deteriorated or unbonded

        1. Repair, VRS1870 TASK 72-32-82-300-013 (REPAIR-013)

    7. SUBTASK 72-32-82-220-117 Examine the LP Compressor Stage 2.3 Blades Fillet Root

    1. Refer to Figure.

      2. Examine the fillet root at Location 7.

        1. Nicked, dented and scratched.

          1. Less than 0.0019 in. (0.05 mm) in depth.

          1. Accept.

          2. More than in Step.

          1. Reject.

    8. SUBTASK 72-32-82-380-076 Apply the Dry Film Coating

      1. Apply the dry film coating

      1. Repair, VRS1387 TASK 72-32-82-300-002 (REPAIR-002)

    9. Figure: Locations on the LP Compressor Stage 2.3 Blades

    Locations on the LP Compressor Stage 2.3 Blades

    Figure: Location of the LP Compressor Stage 2.3 Blades Sealing Strip

    Location of the LP Compressor Stage 2.3 Blades Sealing Strip

    Figure: Dovetail Contact Area of the LP Compressor 2.3 Blades

    Dovetail Contact Area of the LP Compressor 2.3 Blades

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Update task and limits (16VJ805A)