PMA and DOT Cylinders

PMA and DOT cylinders are oxygen storage tanks approved for aviation use under strict FAA and U.S. Department of Transportation regulations. PMA (Parts Manufacturer Approval) certifies that the part meets FAA airworthiness standards for installation in certified aircraft, while DOT approval ensures safe handling, transport, and refillability. These oxygen cylinders are used in both portable and built-in oxygen systems for general aviation, business jets, and other aircraft types. They provide safe, pressurized oxygen storage essential for high-altitude and emergency applications. Aerox offers PMA and DOT-certified cylinders in various sizes for flexible aircraft integration.

PMA approval indicates that an oxygen cylinder has been tested and approved by the FAA for installation in certified aircraft. This ensures compatibility, reliability, and safety in flight operations. Using PMA-approved components helps operators maintain regulatory compliance and avoid costly delays during inspections or repairs. Aerox PMA cylinders are built to the same high standards as original equipment, offering a certified and dependable replacement option. For pilots and maintenance crews, choosing PMA-approved tanks means peace of mind and legal assurance in the cockpit.

DOT certification confirms that an oxygen cylinder meets federal safety standards for high-pressure gas containment, handling, and transportation. These regulations are enforced by the U.S. Department of Transportation to ensure cylinders can safely withstand pressure, temperature changes, and environmental stress. DOT-approved cylinders must also be tested and requalified periodically to remain in service. Aerox DOT cylinders are trusted by aviation professionals for their rugged design and proven performance. Always check the cylinder's DOT markings to verify compliance and expiration dates.

Aerox offers a full range of PMA and DOT-approved oxygen cylinders in both aluminum and composite options. Their product line includes various sizes and capacities, from small portable tanks for single-user setups to larger fixed cylinders for built-in oxygen systems. Cylinders are available with or without regulators and can be paired with Aerox oxygen masks, flowmeters, and adapters for a complete solution. Whether you're outfitting a light aircraft or upgrading a business jet’s oxygen supply, Aerox has a tank to fit your needs. All models are built for high reliability and long service life.

The right oxygen cylinder depends on several factors, including your aircraft type, typical flight altitude, duration of use, and whether the system is portable or installed. Pilots flying solo or on shorter flights may prefer smaller, lightweight tanks, while multi-user or high-altitude applications require larger capacities. Aerox offers detailed specifications for each cylinder, including fill volume, dimensions, and compatibility with other oxygen system components. PJi’s aviation experts can help you select the correct PMA and DOT cylinder for your mission and aircraft. Reach out by phone, email, or chat for assistance.

The service life of an oxygen cylinder varies by material, usage, and maintenance, but both PMA and DOT regulations mandate periodic testing and requalification. Most aluminum cylinders require hydrostatic testing every five years, while composite cylinders may have a set service limit, often around 15 years. Aerox oxygen tanks are labeled with manufacturing and test dates, making it easy to track inspection requirements. Keeping up with these intervals is critical to maintaining safe, compliant oxygen systems. Always consult your specific cylinder’s documentation for requalification timelines.

Yes, all Aerox PMA and DOT-approved oxygen cylinders are designed to be refilled with aviation-grade oxygen. Refilling must be performed at certified facilities that follow DOT guidelines and use proper oxygen-handling procedures. Aerox also provides compatible fill adapters to help streamline the refill process. It's important to monitor pressure levels and refill before each flight to ensure a full supply. PJi carries refillable cylinders and accessories to support regular oxygen system maintenance.

Aluminum oxygen cylinders are widely used in aviation due to their durability, affordability, and ease of refilling. Composite cylinders, made from carbon fiber and other advanced materials, offer significant weight savings—making them ideal for performance-focused aircraft or portable applications. Aerox supplies both aluminum and composite models with PMA and DOT approval, ensuring compliance regardless of material. The choice between aluminum and composite often depends on aircraft weight limitations, portability needs, and personal preference. Both types offer reliable, high-capacity oxygen storage.

Aerox PMA and DOT cylinders are designed to integrate seamlessly with most general aviation oxygen systems, both portable and installed. They support a variety of regulators, flowmeters, and mask connections, allowing for easy customization to fit your aircraft setup. Always verify connector types and mounting requirements before installation to ensure a proper fit. PJi offers a full range of compatible accessories and can guide you through the selection process. With the proper configuration, Aerox cylinders can enhance both safety and comfort during flight.