50-430043-547 - Textron Aviation OEM Main Door Assembly Hinge Half For King Air

50-430043-547 – Textron Aviation OEM Main Door Assembly Hinge Half For King Air

Available now on the Airparts.aero Marketplace.

Overview

The Textron Aviation 50-430043-547 is a genuine OEM, flight-critical main cabin door hinge half, a primary structural component for the airstair door on the Beechcraft King Air series of aircraft. This is not a simple hinge; it is a precision-machined, high-strength forging that serves as one half of the main hinge assembly. Its sole function is to bear the entire static and dynamic load of the massive main cabin door, ensuring it swings smoothly and aligns perfectly with the fuselage. As a genuine Textron OEM part, it guarantees the material strength, dimensional accuracy, and fatigue life required for this critical structural application.

Key Features

• Primary Structural Component: As a main door hinge, this is a primary airframe structure. It is engineered to support the full, cantilevered weight of the airstair door when open, and to handle the significant loads associated with opening, closing, and securing the door.

• High-Strength Forged Aluminum: Fabricated from a solid billet of high-strength, aerospace-grade aluminum alloy using a high-pressure forging process. This creates a dense, oriented grain structure that provides exceptional strength and resistance to fatigue cracking.

• Precision CNC Machining: The forging is then precision-machined on a multi-axis CNC mill to create the exact final shape. This includes boring the hinge pivot holes to an extremely tight tolerance to ensure a smooth, play-free hinge action and precise door alignment.

• Corrosion Protection: The finished part is treated with a chemical conversion coating (Alodine) and/or a high-performance primer. This provides a robust, multi-layer defense against corrosion, ensuring the long-term structural integrity of the hinge.

• Genuine Textron OEM Part: As a genuine factory component, it guarantees conformance to the strict material specifications, heat treatments, dimensional tolerances, and non-destructive testing (NDT) standards required by the original aircraft Type Certificate.

Technical Specifications

• Part Number: 50-430043-547

• Component Type: Main Cabin Airstair Door Hinge Half

• Material: High-Strength Forged Aluminum Alloy

• Finish: Primed and/or Chemical Conversion Coated

• Primary Function: Provides the structural pivot point for the main cabin door.

• Inspection: 100% Non-Destructive Tested (NDT) for flaws.

• Certification: FAA Production Approval

Aircraft Compatibility

The 50-430043-547 is a specific structural component for the cabin door on a wide range of the legendary Beechcraft King Air family. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.

• Primary Aircraft Models:

  • Beechcraft King Air: 90, 100, 200, 300/350 Series

Applications

This hinge half is a flight-critical component used in two primary scenarios:

• Aircraft Manufacturing & Major Repair: The factory-standard component for aircraft production and the only certified replacement for a damaged original hinge.

• Structural Repair: The primary replacement part when the original hinge is found to have cracks, corrosion, or elongated pivot holes during a major structural inspection.

Why Choose 50-430043-547?

The main cabin door on a King Air is a heavy, plug-type airstair door that is also part of the pressurized vessel of the aircraft. Its alignment is critical for a proper seal. A worn or cracked hinge can cause the door to sag, making it difficult to close and creating dangerous pressurization leaks. A complete failure of the hinge would be catastrophic. Using a genuine Textron Aviation 50-430043-547 is the only way to ensure the part has the certified material strength and precise dimensions for a stress-free, airworthy structural repair.

Order Your 50-430043-547 Hinge Half Now

Ensure the structural integrity of your aircraft's main entry door with a genuine, factory-certified OEM airframe component. Visit Airparts.aero to inquire about the 50-430043-547 main door hinge half today.

The 50-430043-547 is one of two interlocking hinge halves (one mounted to the door, the other to the fuselage) that are joined by a hinge pin. The precision of the bored holes for the hinge pin and its associated bushings is the most critical dimensional feature. These bores are machined to a tolerance of thousandths of an inch to ensure a smooth, rotational action with zero radial or axial "slop." This precision is fundamental to the proper rigging of the door, allowing the multiple bayonet-style locking pins around the door's perimeter to engage simultaneously and evenly with their receptacles in the fuselage, creating a secure and airtight seal for the pressurized cabin.

Note: This is a flight-critical primary airframe structure. Installation and any associated repairs must be performed by a certified A&P mechanic at a qualified Part 145 repair station with the appropriate structural ratings, in strict accordance with the current Textron Aviation (Beechcraft) structural repair manual. Proper rigging of the door is mandatory after installation.

Applicable Textron Aircraft

• King Air 100
• King Air 350 or 350C FM-1 to FM-35
• King Air 360, 350i or 350C FM-36 & on
• King Air B200, B200T, B200C or B200CT
• King Air B200GT or B200CGT
• King Air C90, C90A, C90GT or E90
• King Air C90GTi Series

List not comprehensive, may be applicable on other models.