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AMC M.A.504 (d) 2 - Control of unserviceable components
1) Mutilation should be accomplished in such a manner that the components become permanently unusable for their original intended use. Mutilated components should not be able to be reworked or camouflaged to provide the appearance of being serviceable, such as by re-plating, shortening and re-threading long bolts, welding, straightening, machining, cleaning, polishing, or repainting.
2)  Mutilation may be accomplished by one or a combination of the following procedures: a) grinding, b) burning, c) removal of a major lug or other integral feature, d) permanent distortion of parts, e) cutting a hole with cutting torch or saw, f) melting, g) sawing into many small pieces, h) any other method accepted by DGCA on a case by case basis.
3) The following procedures are examples of mutilation that are often less successful because they may not be consistently effective:
a) stamping or vibro-etching,
b) spraying with paint
c) small distortions, incisions or hammer marks,
d) identification by tag or markings,
e) drilling small holes,
f) sawing in two pieces only.

Rev 0, dated 2nd March, 2010
 Section-2  CAR M
4) Since manufacturers producing approved aircraft components should maintain records of serial numbers for "retired" certified life-limited or other critical components, the organisation that mutilates a component should provide the original manufacturer with the data plate and/or serial number and final disposition of the component.
AMC M.A.504 (e) - Control of unserviceable components
A maintenance organisation may choose, in agreement with the component’s owner, to release an unsalvageable component for legitimate non-flight uses, such as for training and education, research and development. In such instances, mutilation may not be appropriate. 
The following methods should be used to prevent the component re-entering the aviation supply system:
a)  permanently marking or stamping the component, as "NOT SERVICEABLE." (Ink stamping is not an acceptable method);
b)  removing original part number identification;
c)  removing data plate identification;
d)  maintaining a tracking or accountability system, by serial number or other individualised data, to record transferred unsalvageable aircraft component;
e)  including written procedures concerning disposal of such components in any agreement        or contract transferring such components.
NOTE: Unsalvageable components should not be released to any person or organization that is known to return unsalvageable components back into the aviation supply system, due to the potential safety threat.
Rev 0, dated 2nd March, 2010
Sub Part F – Maintenance Organization AMC M.A.601 Scope
An approved maintenance organisation may be approved to maintain aircraft/ aircraft components. 
AMC M.A.602 Application
An application should be made on a CA Form 2F (Appendix IX) or equivalent acceptable to DGCA.
AMC M.A.603 (a) Extent of Approval
The following table identifies the ATA specification 100 chapter for the category C component rating.
CLASS  RATING  ATA CHAPTERS 
COMPONENTS OTHER THAN COMPLETE ENGINES OR APUs  C1 Air Cond & Press  21 
C2 Auto Flight  22 
C3 Comms and Nav  23 – 34 
C4 Doors - Hatches  52 
C5 Electrical Power  24 – 33 
C6 Equipment  25 - 38 – 45 
C7 Engine – APU  49 - 71 - 72 - 73 - 74 - 75 – 76 77 - 78 - 79 -80 - 81 - 82 -83 
C8 Flight Controls  27 - 55 - 57.40 - 57.50- 57.60 57.70 
C9 Fuel - Airframe  28 
C10 Helicopters Rotors  62 - 64 - 66 – 67 
　
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