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 70-63-02-380-501 General Instructions On The Repair Of Surface Protection
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Surface protection is usually applied to the engine parts, when they are made; to prevent corrosion of the materials in bad conditions. The standards of protection applied are those which are most resistant, to the many different conditions found around the world.
In general, where the manual refers to the repair of surface protection (that is, after operation where there is a high risk of corrosion), such procedures are only recommended; because many operators do not get corrosion in their engines. It is then a decision of the operator, from the condition of the engines at overhaul, if repairs are necessary.
The torque load values for these items only give the correct axial loads, when the plating is in good condition.
These instructions do not apply to screw threads; which are usually silver or cadmium plated.
More data on the repair of surface protection is given in the Engine Manual.
General