This system provides personnel access to service the aircraft wings, AFT fuselage, and horizontal and vertical tail components. The dock system consists of interlocking elevated platform sections and specialized support equipment to complement the platforms. There are three basic platform components; a fixed tail mezzanine, mobile multi-sectional wing stands, and AFT fuselage access ramps that allow access between the tail mezzanine and wing stands. Specialized support equipment includes mobile and fixed tool lifts, a rolling sloping longeron stand, and deck-mounted wing cradles.
The fixed single-deck tail mezzanine structure provides the basis for situating the aircraft and wing stands within the hangar. An access stair and tool lift is provided at the rear corner of the mezzanine deck. The mezzanine deck is reinforced in critical locations to allow tail jack placement and use on the deck. The deck is designed to support the repair of a detached Horizontal Stabilizer.
Aft fuselage access ramps provide access to the fuselage and connection between the mezzanine and wing stand. The ramp deck has a sloped transition to accommodate the elevation change between the mezzanine and inboard fuselage stand-raised deck. Slider panels are provided along the inboard edge to conform to the fuselage contour. The ramps are caster mounted for precise positioning and relocation within the facility. A hinged deck section is located at the AFT end to allow the unit to be moved into location without requiring the movement of other stand sections.
The wing dock system consists of six caster-mounted mobile stands per side. Sliders at the inboard and outboard fuel pod locations allow pod removal and installation with the aircraft docked in stands. Slider panels are incorporated along the inboard edge of the inboard stands to provide a deck surface that conforms to the aircraft contour. An access stair and tool lift are provided along the trailing edge of the left and right-wing stand set. Deck slider panels are provided at wing and engine jack shoring positions. Cover plates at each wing jack location conceal gaps between jack legs and sliders. Removable and adjustable handrail sections are provided along the perimeter of the assembled wing stands. All stands lock together at the inner corners using bolt or turnbuckle connections.
The mobile tool lifts are conveniently provided at the tail and wing stand locations. The wing stand tool lifts are mobile to allow roll-away if the wing stands are to be moved or additional aircraft or equipment clearances are required.
The Sloping Longeron stand allows technician access along the entire length of the main cargo bay longerons during repair or replacement. It is specifically designed to collapse for a low profile such that it may be rolled under the tail mezzanine and into the cargo bay area. Once positioned along the edge of the cargo bay, it is hydraulically raised into position.
A set of specially designed wing cradles is provided for each wing stand. These cradles are designed to quickly set up and allow the detached outer wing to rest directly on the wing stand deck. The cradles are fitted with screw jacks and are manually height adjustable.