US 12,240,627 B2
Repairing a hat stringer
Remmelt A. Staal, Irvine, CA (US); Gary D. Oakes, Renton, WA (US); and Arne K. Lewis, Auburn, WA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by THE BOEING COMPANY, Arlington, VA (US)
Filed on Jul. 25, 2023, as Appl. No. 18/358,854.
Prior Publication US 2025/0033798 A1, Jan. 30, 2025
Int. Cl. B64F 5/40 (2017.01); B23P 6/00 (2006.01); B64C 3/18 (2006.01)
CPC B64F 5/40 (2017.01) [B23P 6/00 (2013.01); B23P 2700/01 (2013.01); B64C 3/182 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, comprising:
arranging a first repair stringer in a mounting location along a cross section of a hat stringer, the first repair stringer is shaped to have an internal profile that matches at least a portion of a profile of an internal cavity defined by the hat stringer, and wherein the first repair stringer has a first cap segment, a first flange segment, and a first web segment arranged on a cap segment, a first flange segment, and a first web segment of a stringer of the hat stringer;
arranging a second repair stringer in a mounting location along the cross section of the hat stringer, the second repair stringer is shaped to have an internal profile that matches at least a portion of the profile of the internal cavity, and wherein the second repair stringer has a second cap segment, a second flange segment, and a second web segment extending between and connecting the second cap segment, wherein the second cap segment and the first cap segment of the first repair stringer physically overlap one another and each extend parallel with a cap portion of the profile of the internal cavity;
placing one or more shims between the second flange segment of the second repair stringer and a second flange segment of the stringer; and
coupling the first repair stringer and the second repair stringer with the stringer.