An aircraft, comprising: a vertical tail fin assembly; a first fuselage frame; and a securement assembly for securing the vertical tail fin assembly to the aircraft, the securement assembly comprising: a first lug member secured to the vertical tail fin assembly; and a first clevis member, wherein: a first end portion of the first clevis member is engaged to the first lug member; a second end portion of the first clevis member is secured to the first fuselage frame constructed of a composite material, with a first fastener which extends through the second end portion and the first fuselage frame in a first direction transverse to the first fuselage frame; the first clevis member has a first prong which defines a first opening at the first end portion of the first clevis member and has a second prong which defines a second opening at the first end portion of the first clevis member; the first lug member is positioned between the first prong and the second prong of the first clevis member; and the securement assembly further includes a first pin which extends through the first opening of the first prong, the second opening of the second prong and through a first lug opening defined by and through the first lug member engaging the first clevis member to the first lug member such that the first pin extends in the first direction transverse to the first fuselage frame. a vertical tail fin assembly; a first fuselage frame; and a securement assembly for securing the vertical tail fin assembly to the aircraft, the securement assembly comprising: a first lug member secured to the vertical tail fin assembly; and a first clevis member, wherein: a first end portion of the first clevis member is engaged to the first lug member; a second end portion of the first clevis member is secured to the first fuselage frame constructed of a composite material, with a first fastener which extends through the second end portion and the first fuselage frame in a first direction transverse to the first fuselage frame; the first clevis member has a first prong which defines a first opening at the first end portion of the first clevis member and has a second prong which defines a second opening at the first end portion of the first clevis member; the first lug member is positioned between the first prong and the second prong of the first clevis member; and the securement assembly further includes a first pin which extends through the first opening of the first prong, the second opening of the second prong and through a first lug opening defined by and through the first lug member engaging the first clevis member to the first lug member such that the first pin extends in the first direction transverse to the first fuselage frame. a first lug member secured to the vertical tail fin assembly; and a first clevis member, wherein: a first end portion of the first clevis member is engaged to the first lug member; a second end portion of the first clevis member is secured to the first fuselage frame constructed of a composite material, with a first fastener which extends through the second end portion and the first fuselage frame in a first direction transverse to the first fuselage frame; the first clevis member has a first prong which defines a first opening at the first end portion of the first clevis member and has a second prong which defines a second opening at the first end portion of the first clevis member; the first lug member is positioned between the first prong and the second prong of the first clevis member; and the securement assembly further includes a first pin which extends through the first opening of the first prong, the second opening of the second prong and through a first lug opening defined by and through the first lug member engaging the first clevis member to the first lug member such that the first pin extends in the first direction transverse to the first fuselage frame. a first end portion of the first clevis member is engaged to the first lug member; a second end portion of the first clevis member is secured to the first fuselage frame constructed of a composite material, with a first fastener which extends through the second end portion and the first fuselage frame in a first direction transverse to the first fuselage frame; the first clevis member has a first prong which defines a first opening at the first end portion of the first clevis member and has a second prong which defines a second opening at the first end portion of the first clevis member; the first lug member is positioned between the first prong and the second prong of the first clevis member; and the securement assembly further includes a first pin which extends through the first opening of the first prong, the second opening of the second prong and through a first lug opening defined by and through the first lug member engaging the first clevis member to the first lug member such that the first pin extends in the first direction transverse to the first fuselage frame.