2554-12 - FFC FAA-PMA Fuel Cell for King Air Aircraft

2554-12 – FFC FAA-PMA LH Nacelle Fuel Cell for King Air 90 Series

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Overview

The 2554-12 from FFC (Fuel Cell and Components) is a high-quality, FAA-PMA approved flexible fuel cell, engineered as a direct replacement for the Textron Aviation OEM part number 50-921554-12. This flight-critical bladder tank is designed for the left-hand engine nacelle of the Beechcraft King Air 90 series aircraft. As a Parts Manufacturer Approval (PMA) holder, FFC has demonstrated to the Federal Aviation Administration that this fuel cell meets or exceeds the safety and performance standards of the original equipment part, making it a fully airworthy and certified alternative.

Constructed from advanced, multi-layered rubber and fabric composites, the 2554-12 is designed to fit perfectly within the nacelle structure to safely contain the aircraft's fuel. It provides an equivalent level of durability, fuel resistance, and quality as the OEM part, ensuring the long-term integrity of the aircraft's fuel system.

Key Features

• FAA-PMA Approved Replacement: Fully certified by the FAA as an airworthy, direct replacement for the specified OEM part, offering identical form, fit, and function.

• Direct Replacement for P/N 50-921554-12: Engineered specifically to replace the Textron Aviation left-hand nacelle fuel cell for the King Air 90 series.

• Flexible Bladder-Type Construction: The pliable, multi-ply design allows for a precise fit into the irregular shape of the nacelle fuel bay, maximizing usable fuel volume.

• Multi-Ply, Puncture-Resistant Design: Features multiple layers of reinforced fabric laminated between specialized rubber compounds to provide exceptional strength and resistance to punctures and tearing.

• Impervious to Jet Fuel and Additives: The inner liner is formulated from a nitrile rubber compound that is chemically inert to jet fuel, microbial growth inhibitors, and other fuel additives.

• Meets or Exceeds OEM Specifications: The design, materials, and manufacturing processes have been rigorously tested and approved by the FAA to be at least equal to the original part.

Technical Specifications

• Part Number: 2554-12

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

• OEM Manufacturer: FFC (Fuel Cell and Components)

• Replaces OEM P/N: Textron Aviation 50-921554-12

• Location: Left-Hand (LH) Engine Nacelle Tank

• Material: Multi-layer, vulcanized nitrile rubber and reinforced nylon fabric composite.

• Governing Specification: FAA-PMA No. PQ1001NM, Supplement 119; FFC Engineering Drawings.

Aircraft Compatibility

This FAA-PMA fuel cell is approved for installation on the LH nacelle of the following Beechcraft King Air 90 family aircraft:

• Aircraft Models:

  • King Air C90

  • King Air C90A

  • King Air C90GT

  • King Air E90

Note: Verification of applicability is the absolute responsibility of the installer. The aircraft's current Illustrated Parts Catalog (IPC) should be consulted to verify the OEM part number, for which this FFC part is a direct replacement.

Applications

• Sole Application: Primary containment and storage of Jet A/A1 fuel in the left-hand nacelle fuel bay of specified Beechcraft King Air models.

Why Choose 2554-12?

An FAA-PMA certified part, such as the FFC 2554-12, offers a combination of value and uncompromising safety. This is not a simple "aftermarket" part; it is a component that has undergone a rigorous FAA certification process to prove its equivalency to the OEM part. For operators, this provides a cost-effective option for replacing a life-limited component like a fuel cell, while being assured that the part is fully airworthy, certified, and will maintain the aircraft's original type design.

The Federal Aviation Administration's Parts Manufacturer Approval (FAA-PMA) process, governed by 14 CFR §21.303, is a rigorous engineering and quality assurance validation. To obtain a PMA, a manufacturer like FFC must demonstrate to the FAA that their replacement part is at least equal to the original OEM part in terms of airworthiness. This is typically achieved through the "Test and Computation" method, where the applicant must reverse-engineer the original part, perform detailed material analysis, and conduct extensive testing (e.g., strength, fatigue, environmental) to prove that their design meets or exceeds all applicable airworthiness standards. The manufacturer's quality control system is also audited to ensure that every part produced is identical to the one that was approved. This comprehensive process ensures that a PMA part is not merely a copy, but a fully vetted, independently certified, and airworthy component.

Note: This is a flight-critical component. Its installation is a complex and labor-intensive task that must be performed by a certified A&P mechanic, preferably with direct experience in fuel cell replacement, in strict accordance with the aircraft maintenance manual. The fuel bay must be meticulously cleaned and inspected for any foreign objects or sharp edges prior to installation. Fuel cells have a finite service life and require specific storage conditions.

Documentation

FAA PMA documentation is publicly available on the FAA's Regulatory and Guidance Library (RGL). Installation instructions are provided by FFC and must be used in conjunction with the official Beechcraft King Air Maintenance Manual.

• FAA PMA Database (Reference): Search for FFC / Fuel Cell and Components at https://rgl.faa.gov/