The development of Al-Li 2199 sheet products for use in fuselage applications is presented. This product is being brought to commercial status at an unprecedented rate because of the significant weight savings that it offers. Weight savings are ealized via lower density, and lower fatigue crack growth rates than the incumbent. The status of development for a high strength temper and a high damage tolerance temper are reported. Major performance attributes such as fatigue crack growth, fracture toughness and static properties used for design are discussed. The corrosion characteristics are examined under several types of tests. Differences in availability in terms of width and gauge are discussed as a function of different flow-paths.

Bare 2199 sheet in conjunction with 2099 extruded products, offer opportunities for significant performance improvements in fuselage applications.

The status of development of 2199 plate for use in lower wings is also presented in the context of the above criteria.