SOLICITATION: SOLE SOURCE TO BOEING CAGE 82918 P/N 520-13500-501 FOB ORIGIN.  INSPECTION & ACCEPTANCE AT ORIGIN DSCR DOES NOT CURRENTLY HAVE AN APPROVED TECHNICAL DATA PACKAGE AVAILABLE FOR THIS NSN.  ANY MANUFACTURER, OTHER THAN THE APPROVED SOURCE, WISHING TO SUBMIT A PROPOSAL ON THIS ITEM MUST SUBMIT A COMPLETE SOURCE APPROVAL REQUEST (SAR) PACKAGE.  AN OPTION DOES NOT APPLY TO THIS PROCUREMENT. A LETTER SOLICITATION WILL BE SENT TO BOEING FOR A FIRM FIXED PRICE QUANTITY OF 15 EACH.  THE LETTER ISSUE DATE WILL BE TODAY WITH A CLOSE DATE OF 4/18/11.  DELIVERY REQUESTED WILL BE 161 DAYS ARO. THIS IS AN ARMY CSI ITEM AND ALTERNATE OFFERS ALONG WITH SURPLUS IS NOT ALLOWED. A PAPER COPY OF THE SOLICITATION WILL NOT BE AVAILABLE TO REQUESTORS.  SEE NUMBERED NOTE 22.