?unique=8477a2b)
100-110021-14 – Textron Aviation OEM Door Access Assembly
Available now on the Airparts.aero Marketplace.
The Textron Aviation 100-110021-14 is an OEM-certified door access assembly (often referred to as an inspection door or access cover) designed for high-performance Beechcraft and Cessna airframes. This structural component provides a secure, aerodynamic closure for service ports located on the fuselage, wing, or empennage. Engineered specifically for the Beechcraft King Air and Cessna Citation families, the -14 variant is built to withstand the high-pressure differentials and aerodynamic skin friction encountered during high-altitude turbine operations.
Fabricated from aerospace-grade aluminum alloy, the 100-110021-14 is precision-formed to match the specific contour (radius) of the aircraft’s skin at its designated station. It typically features integrated flush-mount "push-to-open" or "cam-lock" fasteners to ensure a low-drag profile. As an OEM Textron part, it is finished with a corrosion-inhibiting primer (typically chromate or epoxy-based) and is ready for top-coat matching to the aircraft’s specific livery.
Key Features
Contour-Matched Design: Precision-engineered to maintain the "Fair" line of the aircraft skin, minimizing parasitic drag and noise.
Flush-Mount Fastening: Utilizes high-strength, flush-head fasteners that provide a positive mechanical lock while remaining aero-smooth.
High-Strength Aluminum Alloy: Constructed from 2024 or 7075 aluminum to ensure structural rigidity and resistance to "oil-canning" under aerodynamic load.
Corrosion-Inhibiting Finish: Factory-primed to meet Textron’s stringent environmental protection standards, preventing galvanic corrosion at the fastener interfaces.
Serviceability: Designed for rapid opening and closing without the need for specialized tools, facilitating efficient "walk-around" and pre-flight inspections.
Technical Specifications
Part Number: 100-110021-14
Manufacturer: Textron Aviation (Beechcraft / Cessna)
Component Type: Door Access / Inspection Cover
Material: Aluminum Alloy (per Textron Engineering Standard)
Finish: Zinc Chromate or Epoxy Primer
Fastener Type: Typically Cam-Loc or Flush Screw (Configuration dependent)
Governing Specifications: Textron 100-series Structural Standards
Certification: FAA-PMA / Textron OEM Original Equipment
Aircraft Compatibility
Beechcraft King Air Series: 90, 200, 300, and 350 series.
Cessna Citation Series: Select models (refer to IPC Section 52 or 53).
Beechcraft 1900 Series: 1900C and 1900D regional aircraft.
Note: The -14 dash number is station-specific. It may be located at a fueling port, hydraulic service panel, or oxygen filler door. Always verify the location in the Illustrated Parts Catalog (IPC).
Applications
Hydraulic Service Access: Providing entry to reservoirs or accumulators.
Fueling Panels: Covering over-wing or single-point fueling interfaces.
Avionics Cooling Inlets: Serving as an access point for secondary cooling filters.
Structural Inspection: Covering "Hole-in-Wing" or "Hole-in-Fuselage" ports required for NDT (Non-Destructive Testing) inspections.
Why Choose 100-110021-14?
In the world of high-speed aviation, "fit and finish" are performance metrics. Choosing the genuine Textron 100-110021-14 ensures that the door’s structural stiffness and fastener alignment are perfect. Aftermarket or repaired doors that do not sit flush can create vortex shedding, which leads to localized vibration and an increase in fuel burn. Furthermore, using the OEM door ensures that the hinge-line and seal-gap meet the requirements for moisture exclusion, protecting the sensitive avionics or flight control systems located behind the panel from environmental damage.
The 100-110021-14 functions as a Removable Structural Membrane. While it is not a "primary" load-carrying member, it must maintain the continuity of the airframe’s pressure vessel (if located in a pressurized zone) or the aerodynamic integrity of the skin.
Maintenance Tip: During installation, always inspect the Seal/Gasket (if applicable) for compression set. If the door feels "loose" when locked, the fasteners may require adjustment to maintain the correct preload. A loose door can lead to Fretting Corrosion at the skin interface, which can eventually lead to cracks in the primary airframe structure.
Note: The 100-110021-14 is a structural detail part. Installation must ensure that the door is perfectly flush with the surrounding skin to prevent drag. Any door that shows signs of "bowing," deep scratches, or failed fasteners must be replaced to ensure the airworthiness of the aircraft. Installation should be performed by a certified A&P mechanic.
