50-820038 – Textron Aviation OEM Retainer
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Overview
The Textron Aviation 50-820038 is a genuine OEM retainer, a flight-critical component engineered for the main landing gear shock struts of a wide range of Beechcraft Baron and Bonanza aircraft. This is not a simple clip; it is a precision-manufactured retainer whose primary function is to secure the packing seals and glands within the oleo-pneumatic shock strut. Fabricated from high-strength, corrosion-resistant steel, the 50-820038 is essential for maintaining the structural integrity of the strut's sealing assembly, ensuring it can reliably contain the high-pressure hydraulic fluid and nitrogen that support the aircraft.
Key Features
- Primary Seal Retention: Its sole function is to act as a positive mechanical lock, holding the strut's gland nut and the entire stack of hydraulic seals (packings and O-rings) securely in place within the strut cylinder. This is essential for preventing a catastrophic loss of pressure.
- High-Strength Steel Construction: Manufactured from a high-quality, heat-treated steel alloy. This provides the exceptional strength required to withstand the immense hydraulic and pneumatic pressures that are trying to force the sealing gland out of the strut body.
- Corrosion-Resistant Finish: Plated with a durable finish to provide robust protection against corrosion from hydraulic fluid, moisture, and other environmental factors found in the landing gear wheel well.
- Precision Machining: The retainer is machined to extremely tight tolerances for its diameter and thickness. This precision ensures a perfect fit within the machined groove of the strut cylinder, providing a secure, uniform stop for the gland nut.
- Genuine Textron OEM Part: As a genuine factory component specified for Beechcraft aircraft, it guarantees conformance to the exact material specifications, heat treatment, and dimensional tolerances required for a flight-critical landing gear component.
Technical Specifications
- Part Number: 50-820038
- Component Type: Landing Gear Strut Seal Retainer
- Material: High-Strength, Heat-Treated Steel Alloy
- Finish: Corrosion-Resistant Plating
- Primary Function: Secures the main sealing gland within the oleo-pneumatic strut.
- Certification: FAA Production Approval
Aircraft Compatibility
The 50-820038 is a critical internal component in the main landing gear struts of some of the most popular high-performance piston aircraft ever built. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.
- Applicable Textro Aircraft Models:
- King Air 100
- King Air 350 Fusion
- King Air 350C FM-36 & On
- King Air 350C Fusion
- King Air 350i
- King Air 360
- King Air 360C
- King Air B200, B200T, B200C or B200CT
- King Air B200GT
- King Air B200GT Fusion or B200CGT Fusion
- King Air C90, C90A, C90GT or E90
- King Air C90GTi
- King Air C90GTx
- King Air C90GTx Fusion
- Super King Air 350
- Super King Air 350C FM-1 to FM-35
List not comprehensive, may be applicable on other models.
Applications
The 50-820038 is a flight-critical component essential for the integrity of the landing gear:
- Landing Gear Overhaul: A mandatory inspection and re-installation item during any strut overhaul or reseal. It must be inspected for any signs of corrosion, distortion, or wear.
- Preventing Strut Collapse: The integrity of this retainer is directly responsible for holding the hydraulic and nitrogen pressure within the strut. Its failure would lead to a complete and immediate collapse of the landing gear.
Why Choose 50-820038?
The landing gear is subjected to some of the highest stress on the entire airframe. The 50-820038 retainer is the component that holds the entire sealing package together against these immense forces. Using a genuine Textron Aviation OEM part is the only way to ensure the retainer has the certified material strength and has passed the rigorous quality control and non-destructive testing required for this application. The risk of using a non-certified part with unknown material properties could lead to a gear collapse. For a component this critical, there is no substitute.
Order Your 50-820038 Retainers Now
Ensure the safety and structural integrity of your aircraft's landing gear with genuine Textron Aviation OEM components. Visit Airparts.aero to inquire about new or serviceable 50-820038 retainers today.
The 50-820038 retainer is a key part of the landing gear strut's pressure vessel design. The oleo-pneumatic strut contains hydraulic fluid and nitrogen gas pressurized to several hundred PSI. This pressure acts on the gland nut, which holds the primary seals. The 50-820038 is typically a split ring or a circlip-style retainer that snaps into a machined groove inside the main strut cylinder, just above the gland nut. This provides a positive mechanical stop, preventing the immense internal pressure from pushing the entire sealing assembly out of the end of the strut cylinder. Its shear strength is therefore a critical engineering parameter, as it must be strong enough to withstand the full force generated by the internal strut pressure acting on the area of the gland nut.
Note: This is a flight-critical landing gear component. Installation must be performed by a certified A&P mechanic, typically during a strut reseal or overhaul, in strict accordance with the current Textron Aviation (Beechcraft) maintenance manual. Specialized tools are often required for its safe removal and installation.