scope:

NOTES-This specification is one of a series issued by the Ministry of Supply, either to meet a limited requirement not covered by any existing British Standard Specification or to serve as a basis for inspection of materials the properties and uses of which are not sufficiently developed to warrant submission to the British Standards Institution for standardisation.

Acceptance of any particular manufacturer's white metal for use in a particular aircraft engine bearing is subject to an engine type test complying with the requirements of Specifications Nos. D. Eng. R.D. 2000 (Service Type Approval Tests fo; · British Piston Aero Engines) or D. Eng. R.D. 2100 (Service Type Approval Tests for Jet Propulsion Aero Engines) as applicable.