50-610000-550 - Textron Aviation OEM Elevator Bracket

50-610000-550 – Textron Aviation OEM Elevator Bracket

Available now through the AirParts Aero marketplace.

Overview Section

The Textron Aviation 50-610000-550 is a high-precision OEM Elevator Control Bracket designed for the primary flight control systems of Beechcraft and Cessna airframes. This structural component acts as a vital anchor and pivot point within the elevator’s mechanical linkage, facilitating the transfer of pilot control inputs to the horizontal control surfaces.

As a safety-of-flight component, the 50-610000-550 is manufactured to withstand the constant aerodynamic pressures and high-cycle stress associated with pitch control. Unlike the -419 variant, the -550 designation typically specifies a unique mounting geometry or material thickness required for later-model serial numbers or specific high-performance variants. Every unit is finished with aerospace-grade anti-corrosives to ensure longevity in the often-damp environment of the aircraft's empennage.

Key Features Section

• OEM Structural Integrity: Engineered by Textron Aviation to meet original Type Certificate (TC) requirements, ensuring that load paths remain exactly as flight-tested during certification.

• Aero-Grade Alloy Construction: Fabricated from high-strength aluminum or alloy steel (per OEM blueprint) to provide maximum fatigue resistance without adding unnecessary weight.

• Corrosion-Resistant Coating: Typically features a Zinc Chromate or Alodine finish to protect against intergranular corrosion in the tail cone and horizontal stabilizer bays.

• Precision Pivot Bores: Features reamed holes designed for a "close-tolerance" fit with pivot bushings and NAS-series bolts, eliminating play in the elevator system.

• Stress-Relieved Geometry: Designed with specific radius curves to eliminate "stress risers," preventing the formation of cracks during high-G maneuvers or turbulence.

Technical Specifications Section

Aircraft Compatibility Section

The 50-610000-550 is a structural staple for several high-utilization airframes in the AirParts Aero inventory:

• Beechcraft King Air Series: Frequently found in the elevator rigging of the King Air 200, B200, and 300 series.

• Beechcraft Baron: Utilized in the empennage of high-performance Model 58 variants.

• Beechcraft 1900: Used in specific regional turboprop configurations for control surface stabilization.

Technical Applications & Safety

The elevator bracket is the foundation of the aircraft's pitch authority. If the bracket becomes compromised through corrosion or mechanical wear, the result can be "slop" in the controls, or in severe cases, control surface flutter—a condition that can lead to catastrophic structural failure.

Safety Warning: During every Annual or 100-hour inspection, the 50-610000-550 should be inspected for "smoking rivets" (telltale streaks of aluminum oxide indicating movement) and elongated bolt holes. Any sign of hairline fracturing around the mounting flange requires immediate replacement to ensure continued airworthiness.

Technical Engineering Insight

The technical advantage of the 50-610000-550 lies in its Metallurgical Grain Flow. During manufacturing, the alloy is forged or machined so that the internal grain structure of the metal aligns with the primary load vectors of the elevator's movement. This "grain-flow alignment" is what gives the OEM bracket its superior fatigue life compared to aftermarket parts cut from simple plate stock.

Additionally, the 50-610000-550 is designed to maintain a specific Bushing-to-Bore Interference Fit. This prevents the pivot bushing from rotating within the bracket itself, which would otherwise wear out the aluminum housing. By utilizing the genuine Textron part through AirParts Aero, maintenance providers ensure that the mechanical advantage of the control system is preserved, maintaining the "factory-new" control feel and safety margins.

Installation & Maintenance Addendum

1. Hardware Inspection: Always use new NAS-grade bolts and MS-grade locknuts during installation.

2. Lubrication: If the bracket houses a needle bearing or bushing, ensure it is serviced with the grease specified in the AMM (e.g., AeroShell 22).

3. Travel Limits: After installation, verify that the elevator stops are correctly adjusted so the bracket is not "pre-loaded" at the end of its travel.