scope:

PURPOSE

Fracture control is implemented to significantly reduce the risk of a catastrophic failure for a prescribed service period due to propagation of undetected pre-existing crack-like defects (flaws). (NOTE: If cracks are detected, the part will normally be repaired or scrapped. Flight of parts with known crack-like flaws is not permitted without specific analysis and approvals as described in Section 6.4). The intent of this handbook is to provide fracture control implementation guidance applicable to a variety of hardware designs and purposes. A variety of fracture control considerations and options are addressed, many of which may not be applicable to a given design. The user is encouraged to keep assessment of parts simple, and focused, and to use this handbook, as appropriate, to aid in implementation of fracture control. Information is provided to assist the user in the development of an effective Fracture Control Plan, as well as other fracture control documentation, and in development and completion of an acceptable and efficient fracture control program through identification of cost effective criteria, procedures, and controls.