scope:

This instruction applies to all Navy rotary wing aircraft. It requires implementation by all naval activities having responsibilities for assuring continued safe aircraft operations. Maintaining and reporting records of aircraft usage, and strict adherence to time compliance requirements for installation of the structural modifications is required for individual aircraft and dynamic components to attain their assigned service life limits. This instruction is closely

S/N: 0808-LD-009-1690

related to the Office of the Chief of Naval Operations (OPNAV) requirements delineated in references (a) and (b) and to other Naval Air Systems Command (NAVAIR) programs published in references (c) through (g). This instruction does not supersede, but clarifies and supplements reference (a), emphasizing configuration relationships governing the OPNAV limitations. Additionally, this instruction does not supersede or change the requirements of reference (e).