Presolicitation notice from the Department of Defense, specifically the Department of the Navy, is seeking to procure 5 units of a hook arresting device for aircraft. This item, classified under the PSC industry code 1560 for airframe structural components, is used to safely stop the movement of aircraft during landing on aircraft carriers. The part requires engineering source approval to ensure its quality and can only be acquired from approved sources due to the unique design capability, engineering skills, and manufacturing/repair knowledge possessed by these sources. The approved source(s) retain data rights and technical knowledge that are essential for maintaining the quality of the part. An alternate source must go through a qualification process approved by the government engineering activity. Government source approval is required prior to contract award due to the critical nature of the item and the inadequacy of available technical data to support full and open competition. Interested parties who are not approved sources must submit the necessary information detailed in the NAVSUP Weapon Systems Support Source Approval Information Brochures. The solicitation also provides links to additional resources for spares and repair. It is important to note that failure to provide all required data or document previous submission of the required data will result in disqualification from consideration. The notice also mentions the availability of military and federal specifications and standards, qualified products lists, and other standardized documents from the DoD Single Stock Point. The government is not using the policies contained in FAR Part 12 for the solicitation, but interested parties can still express their capability to provide a commercial item within 15 days of this notice.