From the notice

The subject item requires Government source approval prior to contract award, as the item is flight critical and/or the technical data available has not been determined adequate to support acquisition via full and open competition. Only the source(s) previously approved by the Government for this item have been solicited. The time required for approval of a new source is normally such that an award cannot be delayed pending approval of a new source. If you are not an approved source you must submit, together with your proposal, the information detailed in one of the NAVSUP Weapon Systems Support (NAVSUP WSS) Source Approval Information Brochures listed below. Spares: [link] port/Business-Opps/ Repair: [link] -Weapon-Systems-Support/Business-Opps/ technical data required to be submitted based on your company's experience i production of the same or similar item, or if this is an item you have never made. NAVSUP Weapon Systems Support (NAVSUP WSS) Philadelphia intends to solicit on a sole source basis for a 5-Year Basic Ordering Agreement for the repair of a supply. Fourteen (14) Repairs of NSN(s): 7010 015034814, 5999 014772114, 6110 014772111, 5210 014769669, 5998 014769618, 6110 014769617, 5998 014769610, 5998 014769444, 5998 014769442, 5999 014769441, 5999 014769427, 5999 014769S422, 32840 014741666, 5210, 017105697, 5210 014769432. \\ If your request for source approval is currently being evaluated at NAVSUP W submit with your offer a copy of the cover letter which forwarded your request for source approval.

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