2552-15 - Floats & Fuel Cells FAA-PMA Fuel Cell for King Air 90

2552-15 – Floats & Fuel Cells FAA-PMA Fuel Cell for King Air 90 (Replaces Textron 50-921552-17)

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The 2552-15 is a premium, FAA-PMA certified flexible fuel cell from Floats & Fuel Cells (FFC), a global leader in aircraft fuel containment technology. This fuel cell is engineered as a direct replacement for the Textron (Beechcraft) OEM outboard leading edge fuel cell (P/N 50-921552-15 and 50-921552-17) on the venerable King Air 90 series aircraft. As an FAA-PMA approved part from a dedicated fuel cell specialist, it offers a certified, airworthy, and cost-effective solution for replacing aged or leaking fuel bladders.

Each FFC fuel cell is meticulously handcrafted from a multi-layer composite of proprietary synthetic rubbers and high-strength nylon reinforcement fabric. The layers are assembled and then vulcanized in an autoclave to form a seamless, monolithic bladder that is highly resistant to punctures and the degrading effects of modern aviation fuels. The integrity of this fuel cell is paramount to the safety of the aircraft, providing a reliable and durable barrier against fuel leaks.

Key Features

• FAA-PMA Approved Replacement: Fully certified by the FAA as a safe, airworthy, and direct replacement for Textron P/N 50-921552-15 and 50-921552-17.

• Made by Fuel Cell Specialists: Manufactured by Floats & Fuel Cells (FFC), a company with a worldwide reputation for expertise and quality in aircraft fuel systems.

• Multi-Layer Vulcanized Construction: A robust, composite structure designed for superior durability, flexibility, and resistance to fuel permeation.

• Tear and Puncture Resistant Reinforcement: Internal plies of high-strength nylon fabric provide the structural integrity required to withstand the dynamic loads and stresses of flight.

• Cost-Effective Alternative to OEM: Provides an economical solution for fuel cell replacement without compromising on safety, quality, or certification.

Technical Specifications

• Part Number: 2552-15

• Component Type: FAA-PMA Flexible Fuel Cell / Bladder Tank

• Manufacturer: Floats & Fuel Cells, Inc. (FFC)

• Application Location: Outboard Leading Edge Wing Tank.

• Replaces OEM P/N: 50-921552-15, 50-921552-17

• Material: Multi-layer composite of synthetic rubber (e.g., Nitrile) and nylon reinforcement fabric.

• Required Installation Kit (Sold Separately): FFC P/N 2535-14 (contains all mandatory-replacement gaskets, seals, and hardware).

Aircraft Compatibility

This FAA-PMA fuel cell is approved for installation in the outboard leading edge position on various models of the Beechcraft King Air 90 series. Common applicable models include, but are not limited to:

• King Air C90, C90A, C90GT, C90GTi

• King Air E90

• King Air F90

Crucial Note: The official FAA-PMA supplement for this part and the specific aircraft's Illustrated Parts Catalog (IPC) are the final authorities for verifying installation eligibility.

Applications

• Direct replacement for aged, leaking, or damaged outboard leading edge fuel cells on the specified King Air 90 models.

• Installed during major airframe inspections and structural repairs that require fuel cell removal.

Why Choose 2552-15 from FFC?

Choosing the Floats & Fuel Cells 2552-15 is a decision for specialized expertise and trusted quality. As a dedicated fuel cell manufacturer, FFC has refined its materials and manufacturing processes for decades to create products that are renowned for their durability and fit. A leaking fuel cell is a catastrophic fire hazard. FFC's products offer a certified, airworthy, and economical solution for replacing time-expired or failing fuel cells, backed by an industry-leading reputation for quality and support in fuel containment systems.

The construction of the 2552-15 fuel cell is a specialized manufacturing process centered on vulcanization. To gain FAA-PMA approval, the part must meet or exceed the original's specifications. The cell is built up by hand, layer by layer, over a precisely shaped collapsible form. The inner liner is a specialized Nitrile (NBR) compound with a high acrylonitrile content for minimal fuel permeation. This is followed by plies of nylon fabric, each coated in uncured rubber and oriented at specific bias angles to provide anisotropic tear-resistance, meaning it is strong in all directions. All fittings and ports are integrated into this layup. The entire raw assembly is then placed in a vacuum bag inside a large industrial autoclave. The autoclave applies high external pressure and temperature, initiating vulcanization. This is a thermosetting chemical process where a curing agent (typically sulfur) creates cross-links between the long polymer chains of the rubber. This process irreversibly transforms the separate, sticky, plastic-like layers into a single, seamless, monolithic, and highly elastic structure that is impervious to fuel and capable of flexing with the wing without failing.

Note: This is a flight-critical fuel system component. A new installation kit (FFC P/N 2535-14) is mandatory for every installation. Fuel cell installation is a complex, hazardous, and physically demanding task that requires specialized training and should only be performed by certified A&P mechanics with extensive experience in aircraft fuel system maintenance. All safety precautions for working with fuel, fuel vapors, and in confined spaces must be strictly and continuously followed.

Documentation

The definitive part number applicability and all installation procedures are detailed in the applicable Textron Aviation (Beechcraft) King Air 90 Series Maintenance Manual and the installation instructions provided by Floats & Fuel Cells, Inc.