TASK 72-00-31-300-002 LPC Fan Blade - Repair The Airfoil By Scalloping, Repair-002 (VRS1111)

DMC:V2500-A0-72-00-3104-00A-649A-B|Issue No:002.00|Issue Date:2019-08-01

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 72-00-31-300-002 LPC Fan Blade - Repair The Airfoil By Scalloping, Repair-002 (VRS1111)

General

This repair must only be done when the instruction to do so is given in 72-00-31 Inspection/Check.

Deterioration of SFC, performance and balance of the LP compressor rotor will occur when the fan blades are dressed to this repair.

The maximum quantity of material which can be removed from a given rotor assembly is the equivalent of three blades dressed to the maximum limits. The remaining serviceable blades are not dressed.

This repair can only be used on an LP compressor (fan) module, with the fan blades still assembled in position.

Fan blades repaired to this scheme, must be glass bead peened when the blades are removed from the LP fan disk by 72-00-31 Inspection/Check. Glass bead peening instructions are specified in VRS1724.

Material of component

PART IDENT

SYMBOL

MATERIAL

LPC rotor blade assembly

Titanium alloy

Price and availability - none

A log book entry is necessary when you complete this repair.

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

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
Portablegrinding equipmentLOCALPortable grinding equipment
Fluorescent Penetrant Inspection EquipmentLOCALFluorescent Penetrant Inspection Equipment
Chemical Cleaning EquipmentLOCALChemical Cleaning Equipment
IAE 3R19016 LE profile gage0AM53IAE 3R190161
IAE 3R19017 LE profile gage0AM53IAE 3R190171

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-075 WATERPROOF SILICON CARBIDEIE241CoMat 05-075
CoMat 05-076 WATERPROOF SILICON CARBIDEK3895CoMat 05-076
CoMat 05-077 WATERPROOF SILICON CARBIDEK6835CoMat 05-077
CoMat 05-078 WATERPROOF SILICON CARBIDEK3895CoMat 05-078
CoMat 05-079 WATERPROOF SILICON CARBIDEK3895CoMat 05-079
CoMat 05-080 WATERPROOF SILICON CARBIDE44197CoMat 05-080
CoMat 05-081 WATERPROOF SILICON CARBIDE44197CoMat 05-081
CoMat 05-082 WATERPROOF SILICON CARBIDE44197CoMat 05-082
CoMat 05-083 WATERPROOF SILICON CARBIDE44197CoMat 05-083
CoMat 05-084 WATERPROOF SILICON CARBIDE44197CoMat 05-084
CoMat 05-085 WATERPROOF SILICON CARBIDE44197CoMat 05-085

Spares

NONE

Safety Requirements

CAUTION

TITANIUM COMPONENTS
YOU MUST USE SILICON CARBIDE TYPE ABRASIVE WHEELS, STONE AND PAPERS TO DRESS, BLEND AND POLISH THIS COMPONENT.
DO NOT USE FORCE WITH MECHANICAL CUTTERS OR THE MATERIAL WILL BECOME TOO HOT.
IF THE MATERIAL SHOWS A CHANGE IN COLOR TO DARKER THAN A LIGHT STRAW COLOR, THE COMPONENT IS TO BE REJECTED.

Procedure

    1. SUBTASK 72-00-31-230-053 Examine the LPC Rotor Blade for Cracks

      1. Do a pentrant crack test to find all the damage.

      1. Use fluorescent penetrant inspection equipment.

    2. SUBTASK 72-00-31-350-052 Remove the Damage from the LPC Rotor Blade

    1. Refer to Figure, Figure, Figure and Figure.

      2. Cutaway to remove nicks, dents, scores, scratches and/or damage.

      1. Use portable grinding equipment.

        Cutaway until all damage is removed.

      3. Make smooth remove area and polish out scores.

      1. Polish marks must be in a radial direction (i.e. from root to tip of the blade).

        Surface finish of the repair must be the same as the adjacent area.

    3. SUBTASK 72-00-31-350-053 Put Back the Leading Edge Shape

    1. Refer to Figure, Figure and Figure.

      2. Put back the leading edge radius.

      3. Lightly polish, make sure there is a smooth shape between radius and airfoil.

      1. Polish marks must be in a radial direction (i.e. from root to tip of the blade).

        Surface finish of the repair must be the same as the adhacent area.

    4. SUBTASK 72-00-31-110-052 Do a Swab Etch

      1. Chemically clean.

      1. Refer to TASK 70-11-08-300-503, SUBTASK 70-11-08-300-001.

        Use chemical cleaning equipment.

      2. Swab etch the repaired area(s).

      1. Refer to TASK 70-11-08-300-503, SUBTASK 70-11-08-300-002.

        Use chemical cleaning equipment.

    5. SUBTASK 72-00-31-230-054 Do a Crack Test

    1. Refer to Figure, Figure, Figure and Figure.

      2. Do a penetrant crack test for the repaired area.

    6. SUBTASK 72-00-31-220-061 Examine the LPC Rotor Blade Assembly

    1. Refer to Figure, Figure, Figure and Figure.

    2. Do a visual and dimensional inspection.

    7. SUBTASK 72-00-31-350-054 Identify the Location of Repaired Fan Blade

    1. Refer to Figure.

      2. Remove the inlet cone.

    3. Record the location number of the repaired fan blade in the engine log book.

      4. NOTE

        Fan blades repaired to this scheme must be glass bead peened when the blades are removed from the LP compressor fan disk. Refer to paragraph '2. General'.

        Install the inlet cone.

    8. Figure: Fan blade scalloping limit

    Fan blade scalloping limit

    Figure: Fan blade scalloping limits

    Fan blade scalloping limits

    Figure: Scallop proportions

    Scallop proportions

    Figure: Fan blade surface dressing for pressure face and non pressure face

    Fan blade surface dressing for pressure face and non pressure face

    Figure: The fan blade leading edge shape

    The fan blade leading edge shape

    Figure: Section AA-AA and section AB-AB

    Section AA-AA and section AB-AB

    Figure: Section AC-AC

    Section AC-AC

    Figure: Location number of the fan blade

    Location number of the fan blade

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial fix to XML - Applic A1 only

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:44197
Enterprise Name:SAINT-GOBAIN INDUSTRIAL CERAMICS INC.
BU Name:SAINT-GOBAIN ABRASIVES, INC
Street:ONE NEW BOND STREET
P.O. Box:PO BOX 15008
City:WORCESTER
State:MA
Zip Code:01615-0008
Country:USA
Phone Number:1-508-795-5000
Fax Number:1-508-795-2828
Internet:www.saint-gobain-northamerica.com
Manufacturer Code:IE241
Enterprise Name:DELETED. Was ANGLO ABRASIVES.
Manufacturer Code:K3895
Enterprise Name:DELETED. REFER TO VENDOR CODE KC1D9.
Manufacturer Code:K6835
Enterprise Name:MED-LAB LTD
BU Name:MED-LAB LTD
Street:COPELAND ST
City:DERBY
Zip Code:DE1 2PU
Country:GREAT BRITAIN
Phone Number:44-1332-349094
Fax Number:44-1332-371237
Email:sales@med-lab.co.uk
Internet:www.med-lab.co.uk
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:1E1X8
Supply Number:CoMat 05-075
Type:sp01
Supply Short Name:CoMat 05-075 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-075 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/28 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 800
JCR-181 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K1905
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-076
Type:sp01
Supply Short Name:CoMat 05-076 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-076 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/30 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 500
JCR-183 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-077
Type:sp01
Supply Short Name:CoMat 05-077 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-077 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/32 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 360
JCR-185 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-078
Type:sp01
Supply Short Name:CoMat 05-078 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-078 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/34 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 280 (ANSI B74.18)
JCR-187 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-079
Type:sp01
Supply Short Name:CoMat 05-079 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-079 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/36 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 220 (ANSI B74.18)
JCR-189 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-080
Type:sp01
Supply Short Name:CoMat 05-080 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-080 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/37 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 180 (ANSI B74.18)
JCR-190 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-081
Type:sp01
Supply Short Name:CoMat 05-081 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-081 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/38GRIT SIZE 150 A-A-1047
JCR-191GRIT SIZE 150 A-A-1047
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-082
Type:sp01
Supply Short Name:CoMat 05-082 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-082 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/39 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 120 (ANSI B74.18)
JCR-192 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-083
Type:sp01
Supply Short Name:CoMat 05-083 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-083 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/40 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 100 (ANSI B74.18)
JCR-193 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-084
Type:sp01
Supply Short Name:CoMat 05-084 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-084 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/41 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 80 (ANSI B74.18)
JCR-194 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Manufacturer Code:1E1X8
Supply Number:CoMat 05-085
Type:sp01
Supply Short Name:CoMat 05-085 WATERPROOF SILICON CARBIDE
Supply Name:CoMat 05-085 WATERPROOF SILICON CARBIDE
Specification Groups:
Doc NumberType
OMAT: 5/42 (RR REF)WATERPROOF SILICON CARBIDE ABRASIVE PAPER, CAMI GRIT DESIGNATION 60 (ANSI B74.18)
JCR-195 (JAEC REF)
Suppliers:
ManufacturerRemarks
1E1X8
K6835
LOCAL
Link not Found
Link not Found
Manufacturer Code:0AM53
Tool Number:IAE 3R19016
Tool Name:IAE 3R19016 LE profile gage
Manufacturer Code:0AM53
Tool Number:IAE 3R19017
Tool Name:IAE 3R19017 LE profile gage
Manufacturer Code:LOCAL
Tool Number:Portable grinding equipment
Tool Name:Portablegrinding equipment