Abstract: An under-wing flap support mounting structure incorporates a clevis on a forward end of an underwing beam. A spherical bearing support assembly carrying a spherical bearing is mounted to a fixed wing structure proximate a lower wing skin. A joint coupling has a lug pivotally coupled to the clevis and a longitudinal pin extending from the lug. The longitudinal pin is slidably received in the spherical bearing. The lug has a bore in which a fuse pin is disposed to secure the lug to the clevis and inhibit the lug from pivoting relative to the clevis. A force applied to an aft portion of the underwing beam that is sufficient to urge separation from the wing causes the clevis to apply a shear force to shear the fuse pin and enable the lug to pivot and cause the longitudinal pin to slide out of the spherical bearing. The underwing flap support separates from the wing without resulting damage to the underside of the wing structure.

Abstract: An under-wing flap support mounting structure incorporates a clevis on a forward end of an underwing beam. A spherical bearing support assembly carrying a spherical bearing is mounted to a fixed wing structure proximate a lower wing skin. A joint coupling has a lug pivotally coupled to the clevis and a longitudinal pin extending from the lug. The longitudinal pin is slidably received in the spherical bearing. The lug has a bore in which a fuse pin is disposed to secure the lug to the clevis and inhibit the lug from pivoting relative to the clevis. A force applied to an aft portion of the underwing beam that is sufficient to urge separation from the wing causes the clevis to apply a shear force to shear the fuse pin and enable the lug to pivot and cause the longitudinal pin to slide out of the spherical bearing. The underwing flap support separates from the wing without resulting damage to the underside of the wing structure.