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 79-21-42-300-001 Air Cooled Oil Cooler (ACOC) Inlet Duct - Blend Repair Surface Damage, Repair-001 (VRS1683)
General
This Repair gives the procedure for blending the ACOC inlet duct.
Price and availability - Refer to IAE
The practices and processes referred to in the procedure by the TASK number are in the SPM.
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Standard workshop tools | LOCAL | Standard workshop tools |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM | LOCAL | CoMat 01-275 | ||
| CoMat 05-019 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-019 | ||
| CoMat 05-020 WATERPROOF SILICON CARBIDE | LOCAL | CoMat 05-020 | ||
| CoMat 05-021 WATERPROOF SILICON CARBIDE | 44197 | CoMat 05-021 |
Spares
NONESafety Requirements
NONEProcedure
Maximum blend limit is 0.005 in. (0.12 mm) in depth.
Refer to SPM TASK 70-35-03-300-501.
Remove small area(s) of damage as necessary.
Remove sharp corners and edges.
Refer to SPM TASK 70-35-03-300-501.
Blend area(s) of repair
Polish repaired area to give a surface finish same as adjacent material.
Refer to SPM TASK 70-35-03-300-501.
Polish area(s) of repair
Use CoMat 01-275 CHROMATE CONVERSION COATING FOR ALUMINIUM for aluminum with brush or equivalent.
Refer to SPM TASK 70-35-03-300-501.
Apply a layer of chromate conversion coating on repaired area.
SUBTASK 79-21-42-350-051 Remove the Damage from the ACOC Inlet Duct (01-400)
Make sure all the repaired area have an equivalent surface finish as adjacent material.
Maximum blend limit must not be more than 0.005 in. (0.12 mm) to remove damage.
Do a visual inspection
SUBTASK 79-21-42-220-054 Examine the ACOC Inlet Duct