1213261-200 – Textron Aviation OEM Hinge Assembly
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Overview Section
The Textron Aviation 1213261-200 is an Original Equipment Manufacturer (OEM) Hinge Assembly designed for a specific application within the structure or control surfaces of various Textron Aviation aircraft (Cessna, Beechcraft). A hinge assembly is a critical mechanical component responsible for allowing controlled angular movement (rotation) between two parts, such as a control surface, an access panel, a door, or a cowling.
The complexity of the $-200$ dash number suggests a specific dimensional variant, material, or application unique to a particular model or location (e.g., a specific flap hinge, or a baggage door hinge). As an OEM component, this assembly is manufactured to withstand the required operational loads, fatigue cycles, and environmental exposures, guaranteeing the mechanical integrity and precise kinematic performance (range of motion and alignment) of the part it joins.
Key Features Section
OEM Certified Quality: Manufactured to Textron Aviation's stringent material and dimensional specifications, ensuring precise fitment and guaranteed airworthiness.
High-Strength Construction: Typically fabricated from aerospace-grade aluminum alloy (e.g., 2024 or 7075 series) or stainless steel, selected to provide high strength-to-weight ratio and corrosion resistance.
Precision Alignment: Machined to extremely tight tolerances to ensure accurate alignment and minimal slop (play) in the hinged component, which is critical for flight control surfaces.
Fatigue Resistant: Engineered to endure the high number of load and vibration cycles encountered over the life of the aircraft.
Complete Assembly: Typically supplied as a complete unit, including the required hinge leaves and potentially the bushings or pins, though specific inclusions must be verified.
Corrosion Protection: Treated with an appropriate finish (e.g., anodizing, priming, or specialized coating) suitable for the intended mounting location (interior, exterior, or engine bay).
Technical Specifications Section
Part Number: 1213261-200
Component Type: Hinge Assembly (Structural or Non-Structural)
OEM Manufacturer: Textron Aviation (Cessna / Beechcraft)
Material: Aluminum Alloy or Stainless Steel (Must be confirmed by CoC)
Configuration: Pin/Barrel Hinge (likely a multi-segment or continuous piano hinge type)
Dimensions: Length, width, pin diameter, and hole spacing are specific to the $-200$ dash number and the intended application.
Application: Control Surface Mount, Access Door, or Cowling Attachment (Specific application varies by aircraft model).
Governing Specifications: Certified under FAA-PMA/OEM standards; complies with all relevant dimensional and structural stress analysis requirements.
Aircraft Compatibility Section
Cessna Piston Series: Used on flaps, ailerons, or various access panels (e.g., 172, 182, 210, etc.).
Cessna Turbine Series: Used in access panels, doors, or reverse thrust cowl linkages of Citation Jets (e.g., Excel, CJ series) or Caravan models.
Beechcraft Models: May be used in various King Air or Baron models, depending on commonality within the Textron manufacturing line.
Note: Hinge assemblies are structurally critical or flight control critical. The aircraft’s Illustrated Parts Catalog (IPC) and Structural Repair Manual (SRM) are the final authority for verifying the exact part number and its specific location/use.
Applications Section
Flap or Aileron Mounting: Providing the pivot point for primary or secondary flight control surfaces.
Engine Cowling Access: Allowing repeated opening and closing of engine covers for maintenance access.
Door and Hatch Suspension: Supporting the weight and motion of cabin, baggage, or avionics bay access doors.
Why Choose the 1213261-200?
The 1213261-200 is crucial for structural integrity and flight safety. For hinges connected to primary flight controls (like ailerons or flaps), the tolerance on the hinge is directly related to control flutter potential and control response. Using an uncertified or incorrectly sized hinge risks: 1) Excessive slop or play, leading to poor control authority and dangerous vibration; 2) Premature fatigue failure due to incompatible materials; or 3) Catastrophic separation of a hinged component (e.g., a cargo door or flap segment) in flight. The OEM-certified assembly guarantees the required load path, corrosion resistance, and specific dimensional tolerances necessary to maintain the aircraft's certified design and performance characteristics.
The design performance of the 1213261-200 is fundamentally defined by its resistance to bearing wear and cyclic fatigue. In a high-cycle application like a flight control flap, the internal bushings or bearing surfaces of the hinge barrels are subjected to continuous fretting (micro-slip wear). The hinge material and pin assembly are chosen to provide a differential hardness or lubrication that concentrates wear in the replaceable component (the bushing or pin), thus preserving the main hinge structure. The tight tolerance on the hinge pin diameter and barrel bore (clearance fit) is maintained across the entire length of the hinge to ensure the rotational axis remains perfectly straight under load, preventing the hinge from binding or developing excessive play that could lead to dangerous flight dynamics.
Note: The 1213261-200 is a flight-critical component. During installation, the specified hinge pins must be installed and secured using certified clips, cotter pins, or retainers. Lubrication (e.g., MIL-G-23827 grease) must be applied as specified in the Maintenance Manual to prevent premature wear and corrosion of the hinge barrels.
Documentation
Textron Aviation Structural Repair Manual (SRM): Essential for checking the installation procedures, torque settings, and inspection criteria.
Textron Aviation Illustrated Parts Catalog (IPC): Required for definitive part number verification by assembly location.