TASK 72-50-24-200-001-B00 LPT Inner Diffuser Duct Segment - Examine, Inspection-001

DMC:V2500-A0-72-50-2401-00B-300A-C|Issue No:002.00|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 72-50-24-200-001-B00 LPT Inner Diffuser Duct Segment - Examine, Inspection-001

Effectivity

FIG/ITEM

PART NO.

01-010

3A0108

01-010

3A2493

General

This TASK gives the procedure for the inspection of the inner duct segment. For the other LP turbine inner static seal parts, refer to TASK 72-50-24-200-000 (INSPECTION-000).

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

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

All the parts must be cleaned before any part is examined. Refer to TASK 72-50-24-100-000 (CLEANING-000).

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 crack test before the part is visually examined.

A ** following 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.

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 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 numbers are in the SPM.

References

Refer to the SPM for data on these items.

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

Record and Control of the Lives of Parts, SPM TASK 70-05-00-220-501

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

Some data on these items is contained in this TASK. For more data on these items refer to the SPM.

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Dial indicator with ball insertLOCALDial indicator with ball insert
Dial gageLOCALDial gage
Dial indicator with needle insertLOCALDial indicator with needle insert
Small hole gageLOCALSmall hole gage
External micrometerLOCALExternal micrometer
Dial caliperLOCALDial caliper

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-24-230-099 Do a Crack Test on the Inner Duct Segment without Honycomb Seal (Fluorescent Penetrant)

    1. Clean the parts, Refer to TASK 72-50-24-100-000 (CLEANING-000).

      2. Do the test for cracks on the part that are given below. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        Inner Duct Segment (without Honeycomb Seal)

        1. Cracked

        1. Reject

    2. SUBTASK 72-50-24-220-172 Examine all Areas of the Inner Duct Segment without the Honeycomb Seal for Nicks and Dents

      1. Nicked or dented, use a dial gage and a dial indicator with a needle insert.

        1. Any number, no raised material, 0.004in. (0.1 mm) maximum depth

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4411 TASK 72-50-24-300-045 (REPAIR-045)

    3. SUBTASK 72-50-24-220-173 Examine the Inner Duct Segment at Location A1 for Coating Condition

    1. Refer to: Figure

      2. Damaged or not sufficient coating.

        1. Damaged or not sufficient coating in areas total less than 1.00 sqin (645.16 sqmm)

        1. Repair, VRS4406 TASK 72-50-24-300-047 (REPAIR-047)

        2. Other than in (1)

        1. Repair, VRS4407 TASK 72-50-24-300-041 (REPAIR-041) or VRS4408 TASK 72-50-24-300-042 (REPAIR-042)

      3. Sulphidated, burned areas

      1. Repair, VRS4411 TASK 72-50-24-300-045 (REPAIR-045)

    4. SUBTASK 72-50-24-220-174 Examine the Inner Duct Segment in the Honeycomb Seal Area for Damage

      1. Unbonded.

        1. One unbonded area, maximum 20 adjacent cells

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4409 TASK 72-50-24-300-043 (REPAIR-043)

      2. Damaged or bent cells, use a dial caliper.

        1. Up to 3 rows damaged, maximum length 0.800in. (20.3 mm)

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4409 TASK 72-50-24-300-043 (REPAIR-043)

      3. Rub damage, use a dial caliper, a dial gage and a dial indicator with a ball insert.

        1. Maximum 0.015in. (0.38 mm) in depth, 0.120in. (3.0 mm) in width

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4409 TASK 72-50-24-300-043 (REPAIR-043)

    5. SUBTASK 72-50-24-220-175 Examine the Inner Duct Segment at Location D4 for Damage

    1. Refer to: Figure

      2. Fretted, use a dial gage and a dial indicator with a needle insert.

        1. Up to 0.003in. (0.075 mm) in depth per side

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4410 TASK 72-50-24-300-044 (REPAIR-044)

    6. SUBTASK 72-50-24-220-176 Examine the Inner Duct Segment at Location D1

    1. Refer to: Figure

      2. Worn, use a small hole gage and an external micrometer.

        1. Between 0.1467 and 0.1417in. (3.73 and 3.60 mm)

        1. Accept

        2. Other than in (1)

        1. Reject

    7. SUBTASK 72-50-24-220-177 Examine the Inner Duct Segment at Location D2

    1. Refer to: Figure

      2. Worn, use a dial caliper.

        1. Between 0.118 and 0.1102in. (3.0 and 2.8 mm)

        1. Accept

        2. Other than in (1)

        1. Reject

    8. SUBTASK 72-50-24-220-178 Examine the Inner Duct Segment at Location A2

    1. Refer to: Figure

      2. Fretted, use a dial gage and a dial indicator with a needle insert.

        1. Maximum depth 0.002in. (0.051 mm)

        1. Accept

        2. Other than in (1)

        1. Repair, VRS4412 TASK 72-50-24-300-046 (REPAIR-046)**

    9. Figure: Examine the inner duct segment

    Examine the inner duct segment

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Dial caliper
Tool Name:Dial caliper
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