What are the acceptable procedures for mutilating components under GM1 145.A.42(c)(i)?

Mutilation may be accomplished by one or a combination of the following procedures: grinding; burning; removal of a major lug or other integral feature; permanent distortion of parts; cutting a hole with cutting torch or saw; melting; sawing into many small pieces; and any other method accepted by the competent authority.

Which mutilation methods are considered less successful because they may not be consistently effective?

The following procedures are examples of mutilation that are often less successful because they may not be consistently effective: stamping or vibro-etching; spraying with paint; small distortions, incisions, or hammer marks; identification by tags or markings; drilling small holes; and sawing in two pieces only.

Can a component be mutilated by simply sawing it into two pieces?

No, sawing into two pieces only is listed as an example of a mutilation procedure that is often less successful because it may not be consistently effective. The acceptable procedures include sawing into many small pieces, but not merely sawing into two pieces.

Is stamping or vibro-etching considered a reliable method for mutilating components?

No, stamping or vibro-etching is listed as an example of a mutilation procedure that is often less successful because it may not be consistently effective.

What is the purpose of mutilating components according to GM1 145.A.42(c)(i)?

The purpose is to make the components permanently unusable for their originally intended use, and to prevent them from being reworked or camouflaged to appear serviceable.

Are there any alternative mutilation methods allowed beyond those explicitly listed?

Yes, any other method accepted by the competent authority is allowed as one of the procedures for mutilation.

GM1 145.A.42(c)(i) Components

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GM1 145.A.42(c)(i) Components

ED Decision 2019/009/R

MUTILATION OF COMPONENTS

(a) Mutilation should be accomplished in such a manner that the components become permanently unusable for their originally intended use. Mutilated components should not be able to be reworked or camouflaged to provide the appearance of being serviceable, such as by replating, shortening and rethreading long bolts, welding, straightening, machining, cleaning, polishing, or repainting.

(b) Mutilation may be accomplished by one or a combination of the following procedures:

(1) grinding;

(2) burning;

(3) removal of a major lug or other integral feature;

(4) permanent distortion of parts;

(5) cutting a hole with cutting torch or saw;

(6) melting;

(7) sawing into many small pieces; and

(8) any other method accepted by the competent authority.

(c) The following procedures are examples of mutilation that are often less successful because they may not be consistently effective:

(1) stamping or vibro-etching;

(2) spraying with paint;

(3) small distortions, incisions, or hammer marks;

(4) identification by tags or markings;

(5) drilling small holes; and

(6) sawing in two pieces only.

Details

Source-Title: GM1 145.A.42(c)(i) Components View latest amendments

Domain: Continuing airworthiness

Aircraftcategory: Complex motor-powered aircraft (CMPA), Non-complex motor-powered aircraft (non-CMPA)

Regulatorysource: ED Decision 2019/009/R Navigate

Regulatorysubject: Part-145

Typeofcontent: Easy access rules

Parentir: 145.A.42 Components

Origin: EASA

Category: EAR