Abstract: A method and system for attaching a vertical stabilizer to an aircraft fuselage using a clevis system is disclosed. A composite skin is installed over the aircraft fuselage. The composite skin has apertures for receiving a plurality of clevises in a clevis system. The plurality of clevises is inserted through the apertures in the composite skin. Each of the plurality of clevises is secured to a frame member in the aircraft fuselage. The vertical stabilizer has a multi-spar box connected with a base rib assembly having a plurality of lugs. The base rib assembly of the vertical stabilizer is engaged with the clevis system. The plurality of lugs in the base rib assembly is secured to the plurality of clevises in the clevis system. Attachment of the vertical stabilizer to the aircraft fuselage, as well as subsequent inspection, may be performed from outside the aircraft.

Abstract: A vehicle, such as an aircraft, structural architecture for supporting a horizontal stabilizer with a back up beam having an upper longeron fitting connected to the front side and secured with a back up fitting on the back side, a lower longeron fitting connected to the front side and secured with a back up fitting on the back side, and a pivot fitting connected to the front side of the first back up beam in between the upper longeron fitting and the lower longeron fitting and secured with a third back up fitting on the back side of the back up beam.

Abstract: A method and system for attaching a vertical stabilizer to an aircraft fuselage using a clevis system is disclosed. A composite skin is installed over the aircraft fuselage. The composite skin has apertures for receiving a plurality of clevises in a clevis system. The plurality of clevises is inserted through the apertures in the composite skin. Each of the plurality of clevises is secured to a frame member in the aircraft fuselage. The vertical stabilizer has a multi-spar box connected with a base rib assembly having a plurality of lugs. The base rib assembly of the vertical stabilizer is engaged with the clevis system. The plurality of lugs in the base rib assembly is secured to the plurality of clevises in the clevis system. Attachment of the vertical stabilizer to the aircraft fuselage, as well as subsequent inspection, may be performed from outside the aircraft.

Abstract: A vehicle, such as an aircraft, structural architecture for supporting a horizontal stabilizer with a back up beam having an upper longeron fitting connected to the front side and secured with a back up fitting on the back side, a lower longeron fitting connected to the front side and secured with a back up fitting on the back side, and a pivot fitting connected to the front side of the first back up beam in between the upper longeron fitting and the lower longeron fitting and secured with a third back up fitting on the back side of the back up beam.

Abstract: A fuselage section may include a structural member and a frame member having a stub frame extending over the structural member. The stub frame may have a web. The fuselage section may include an intercostal extending from a terminal end of the stub frame and having an end flange. The fuselage section may additionally include an adjustable splice fitting having a web, a lower flange, and an end flange being mountable in faying contact with respective ones of the stub frame web, the structural member, and the intercostal end flange.