AMC 25.1181 Designated fire zones

• ED Decision 2003/2/RM found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

AMC 25.1181 Designated fire zones ED Decision 2003/2/RM 1 ISO 2685, (15 JULY 1992) ‘Aircraft – Environmental conditions and test procedures for airborne equipment – Resistance to fire in designated fire zones’, gives test conditions and methods of demonstrating compliance with the ‘Fire-resistant’ and ‘Fireproof’ requirements. 2 Tests to demonstrate compliance with the standard grades of resistance to fire may not be necessary if similarity can be shown with other components which have been tested in accordance with this standard. 3 For example, materials which are considered satisfactory for use in firewalls without being subjected to fire tests include – a. Stainless steel sheet 0·4 mm (0·016 in) thick; b. Mild steel sheet protected against corrosion 0·45 mm (0·018 in) thick; and c. Titanium sheet 0·45 mm (0·018 in) thick.