This British standard specifies requirements for the materials and performance of two types of two pack polyurethane finish, for air-drying at ambient temperature, in a range of gloss levels, for aerospace applications.

Type A materials are intended for interior and exterior use where maximum resistance to fluid attack is required.

Type B materials are intended for exterior surfaces, and offer increased tolerance to flexing compared with type A materials.

The polyurethane finish, as part of a paint scheme including a primer, is intended for application to metallic and non-metallic surfaces to give protection against corrosion and resistance to aircraft fluids and to offer surface appearance in terms of colour and level of gloss as specified by the purchaser.

Information on application for type approval is provided in Annex A.