ED Decision 2003/18/RM
Materials must be tested either as a section cut from a fabricated part as installed in the aeroplane or as a specimen simulating a cut section, such as a specimen cut from a flat sheet of the material or a model of the fabricated part. The specimen may be cut from any location in a fabricated part; however, fabricated units such as a sandwich panel, may not be separated for test. The specimen thickness must be no thicker than the minimum thickness to be qualified for use in the aeroplane, except that thick foam parts must be tested in 12.7 mm (0.5 inch) thickness. In the case of fabrics, both the warp and fill direction of the weave must be tested to determine the most critical flammability conditions. When performing the test prescribed in paragraph F4 of this Appendix, the specimen must be mounted in a metal frame so that -
(a) The two long edges and the upper edge are held securely;
(b) The exposed area of the specimen is at least 51 mm (2 inches) wide and 305 mm (12 inches) long, unless the actual size used in the aeroplane is smaller; and
(c) The edge to which the burner frame is applied must not consist of the finished or protected edge of the specimen but must be representative of the actual cross section of the material or part installed in the aeroplane.
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