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 72-50-21-200-003-A00 LPT Stage 4 Rear Heat Shield - Examine, Inspection-003
General
This TASK gives the procedure for the inspection of the stage 4 rear heatshield. For the other LP turbine case parts, refer to TASK 72-50-21-200-000.
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 70-20-01-200-501.
All the parts must be cleaned before any part is examined. Refer to the SPM TASK 70-11-03-300-503.
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.
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, TASK 70-02-02-350-501
Record and Control of the Lives of Parts, TASK 70-05-00-220-501
Inspection of Parts, TASK 70-20-01-200-501
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
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Illuminated magnifier (portable) | LOCAL | Illuminated magnifier (portable) | ||
| Dial caliper | LOCAL | Dial caliper |
Consumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Before inspection, clean the stage 4 rear heatshield. Refer to TASK 72-50-21-100-000.
SUBTASK 72-50-21-220-063 General Instructions for the Inspection of the Stage 4 Rear Heatshield (01-350)
Repair, VRS4017 TASK 72-50-21-300-014
Cracked longer or closer than in (1)
Fluorescent penetrant examine for cracks. Refer to the SPM TASK 70-23-02-230-501.
SUBTASK 72-50-21-230-053 Examine the Stage 4 Rear Heatshield (01-350) for Cracks
Repair, VRS4016 TASK 72-50-21-300-013
Nicks with raised material
Repair, VRS4017 TASK 72-50-21-300-014
Nicks with break through
Examine the surface of the stage 4 rear heatshield for nicks.
Repair, VRS4016 TASK 72-50-21-300-013
Dents with raised material
Repair, VRS4017 TASK 72-50-21-300-014
Dents with break through
Examine the surface of the stage 4 rear heatshield for dents.
SUBTASK 72-50-21-220-064 Examine the Surface of the Stage 4 Rear Heatshield (01-350) for Damage