TASK 72-50-21-300-001 LPT Case - Blend Repair, Repair-001 (VRS4001)

DMC:V2500-A0-72-50-2101-00A-649A-C|Issue No:002.00|Issue Date:2016-11-01

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 72-50-21-300-001 LPT Case - Blend Repair, Repair-001 (VRS4001)

Effectivity

FIG/ITEM PART NO.

01-010

3A0807

01-010

3A0990

01-010

3A0991

01-010

3A1908

01-010

3A2183

01-010

3A2265

01-010

3A2447

01-010

3A2533

Material of component

DESCRIPTION SYMBOL MATERIAL

LP turbine case

Inconel 718

General

Price and availability - none

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

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-23-05-230-501 and SPM TASK 70-35-21-350-501.
Equivalent equipment can be used.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-21-350-052 Blend Repair the LP Turbine Case

    1. Refer to Figure, Figure and Figure.

      2. NOTE

        1. Refer to the SPM TASK 70-35-21-350-501 for blending surface damage.

        2. For local blending use a length to depth ratio of 5:1 minimum, refer to Figure.

        3. Unless stated differently, there is no limit for the number of blends. If there is a number of damage marks close together blend the whole area. Minimum distance between the blends 0.500 in. (12.7 mm).

        Blend repair in area A1.

      1. Maximum permitted depth of blend repair is 0.005 in. (0.13 mm).

      3. Blend repair in area A2.

      1. Maximum permitted depth of blend repair is 0.005 in. (0.13 mm).

        Not more than 5 percent of any one face to be blended in any quadrant.

      4. Blend repair in area A3.

      1. Remove the raised material only.

    2. SUBTASK 72-50-21-230-057 Examine the Blended Areas for Cracks

      1. Do the test for cracks.

      1. Refer to the SPM TASK 70-23-05-230-501.

        Use medium sensitivity level.

        No cracks are permitted.

    3. SUBTASK 72-50-21-220-071 Do the Post Repair Inspection

    1. Refer to Figure, Figure and Figure.

      2. Examine the blended areas dimensionally.

      1. The blend ratio must be in the limits.

    4. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial Change