02-1256C0111 – Tronair 12-Ton Hydraulic Aft Fuselage Jack
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The Tronair 02-1256C0111 is a mission-critical, 12-ton capacity hydraulic tripod jack specifically engineered for the stabilization and lifting of aft fuselage points during heavy maintenance, airframe inspection, and component replacement. As a specialized piece of Ground Support Equipment (GSE), this jack is designed to interface with specific aircraft hardpoints, providing a stable, level platform that ensures the structural integrity of the airframe remains uncompromised during static loading or landing gear cycling.
Constructed with a heavy-duty steel tripod frame, the 02-1256C0111 utilizes a manual, single-stage hydraulic power unit to deliver precise linear displacement. The integration of a mechanical locking collar—a "safety nut"—provides a redundant load-path that prevents uncommanded retraction in the event of a hydraulic pressure loss. This unit is essential for maintenance facilities handling mid-sized business jets and regional aircraft where aft-center-of-gravity (CG) stability is a primary safety concern.
Key Features
Mechanical Safety Lock Nut: Features a threaded ram with a knurled locking collar to provide positive, mechanical load-holding, ensuring the jack cannot drift or collapse under load.
High-Stability Tripod Geometry: The wide-base triangular footprint is engineered to distribute vertical loads effectively, minimizing the risk of tipping on hangar floors.
Precision Manifold Control: Includes a fine-thread release valve for controlled, metered lowering of the aircraft, preventing rapid descent or structural jarring.
Corrosion-Resistant Finish: Utilizes Tronair’s signature high-visibility blue powder coating and zinc-plated hardware for durability in harsh hangar environments.
Integrated Leveling: Equipped with adjustable foot pads or a bubble level (model dependent) to ensure perfectly vertical lifting vectors, reducing side-loading on the airframe jack pads.
Technical Specifications
Part Number: 02-1256C0111
Manufacturer: Tronair
Component Type: Hydraulic Aft Fuselage Tripod Jack
Rated Capacity: 12 Tons (24,000 lbs / 10,886 kg)
Minimum Closed Height: Approx. 40 inches (Verify via OEM spec sheet for specific dash-number variance)
Hydraulic Stroke: 24 inches (Nominal)
Extension Screw: 6-8 inches (Adjustable lead screw for initial hardpoint interface)
Fluid Compatibility: MIL-PRF-5606 or equivalent aircraft hydraulic fluid
Construction Material: High-tensile structural steel tubing
Compliance: Designed in accordance with CE and relevant ANSI/ASME GSE standards
Aircraft Compatibility
Cessna Citation Series: 560XL (Excel/XLS), 680 (Sovereign), 750 (X)
Bombardier Challenger Series: 300/350
Embraer Phenom & Legacy Series: 300, 450, 500
Beechcraft King Air Series: (Aft stabilization applications)
Note: Consult the specific Aircraft Maintenance Manual (AMM) and Illustrated Parts Catalog (IPC) for your tail number to confirm the correct jacking point adapters and weight requirements.
Applications
The 02-1256C0111 is primarily utilized for Aft Airframe Support. During nose gear removal or engine swaps, the aircraft's center of gravity shifts significantly; this jack acts as a "tail stand" or primary lift point to prevent the aircraft from tipping onto its tail (tail-dragger scenario). It is also used for landing gear operational checks (swing tests) where the entire airframe must be leveled and cleared from the ground.
Why Choose 02-1256C0111?
Choosing genuine Tronair GSE ensures that the lifting equipment meets the precise factor of safety (FoS) required for aviation environments. Unlike generic industrial jacks, the 02-1256C0111 is designed with aviation-specific tolerances, ensuring that the ram remains perpendicular to the airframe pad. Using uncertified or under-rated lifting equipment risks catastrophic airframe "crunching," wing-spar torque, or technician injury.
The 02-1256C0111 operates on the fundamental principle of Pascal’s Law, where pressure applied to a confined fluid is transmitted undiminished in all directions. The hydraulic circuit utilizes a manual displacement pump to force fluid into the cylinder, extending the chrome-plated piston. However, the engineering excellence lies in its resistance to column buckling. The tripod legs are designed as "two-force members" in a truss configuration, ensuring that the primary stresses are axial (compression) rather than bending. The ram itself is precision-ground to minimize the "stick-slip" phenomenon (static friction), allowing for the hydrodynamic film to remain consistent during micro-adjustments. This is critical when leveling an aircraft to within fractions of a degree for an IRS (Inertial Reference System) alignment or weight-and-balance calibration.
Note: This is a flight-critical piece of Ground Support Equipment. Improper use can lead to aircraft structural damage or loss of life. Before use, inspect the ram for pitting or hydraulic leaks. Ensure the mechanical safety nut is followed up during the lifting process. Installation and operation must be performed by qualified personnel in accordance with the Tronair Operation and Maintenance Manual and the specific Aircraft Maintenance Manual (AMM).