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5A3274-5 – Goodrich Interiors Evacuation Cylinder Assembly
Available now on the Airparts.aero Marketplace.
Overview
The Goodrich 5A3274-5 is a genuine OEM, flight-critical high-pressure cylinder and valve assembly, the primary component responsible for the rapid inflation of the emergency evacuation slides on the Boeing 737 Next Generation (NG) family of aircraft. This is not a simple air bottle; it is a life-saving device, engineered by Goodrich Interiors (now part of Collins Aerospace) to perform flawlessly in an emergency. The cylinder contains a high-pressure charge of inert gas, and its specialized, quick-acting valve is designed to release this gas almost instantaneously, inflating a massive escape slide in mere seconds.
Key Features
Rapid, High-Volume Gas Discharge: The cylinder and valve assembly is engineered to discharge its entire volume of high-pressure gas in a matter of seconds. This is essential to meet the strict FAA and EASA certification requirement for an evacuation slide to be fully inflated and ready for use in under 10 seconds.
High-Pressure Inert Gas Charge: The cylinder is charged with a high-pressure (typically around 3000 PSI) mixture of inert gases, usually Carbon Dioxide (CO₂) and Nitrogen (N₂). This mixture is non-flammable, provides excellent inflation performance across a wide temperature range, and is safe for passengers.
High-Strength, Lightweight Cylinder: The cylinder is manufactured from a high-strength, lightweight steel or composite material, designed to safely contain the high-pressure gas charge while minimizing weight. It is manufactured and tested in accordance with DOT (Department of Transportation) or equivalent specifications.
Mechanical & Pyrotechnic Actuation: The valve is typically designed for a lanyard-actuated mechanical release. When an aircraft door is opened in the "armed" position, a lanyard connected to the fuselage pulls a pin on the valve, often firing a percussion primer which instantly opens the main valve poppet.
Genuine OEM Component: As a genuine, factory-new or freshly-overhauled component, it guarantees a certified gas charge, a known service life, and full conformance to the rigorous safety and quality standards required for a life-saving device on a transport-category aircraft.
Technical Specifications
Part Number: 5A3274-5
Component Type: Evacuation Slide Inflation Cylinder & Valve Assembly
OEM Manufacturer: Goodrich / Collins Aerospace
Gas Charge: High-Pressure Carbon Dioxide (CO₂) / Nitrogen (N₂) mixture.
Operating Pressure: Approx. 3000 PSI at 70°F
Cylinder Specification: DOT 3HT or equivalent.
Service Life: This is a life-limited assembly that requires periodic hydrostatic testing and has a maximum service life (e.g., 15 years), after which it must be retired.
Certification: FAA / EASA Production Approval
Aircraft Compatibility
The 5A3274-5 is the specified OEM evacuation cylinder for the world's most successful single-aisle jetliner. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.
Primary Aircraft Models:
Boeing 737-600
Boeing 737-700
Boeing 737-800
Boeing 737-900 / 900ER (Next Generation series)
Applications
The 5A3274-5 has a singular, life-saving application:
Emergency Evacuation System: The sole source of inflation for the emergency escape slides. Its flawless, instantaneous operation is critical for allowing passengers and crew to safely evacuate the aircraft in an emergency.
Mandatory Maintenance Item: A life-limited component that must be periodically weighed to check for gas loss and undergo hydrostatic testing to ensure its structural integrity. It must be replaced upon reaching its calendar life limit.
Why Choose 5A3274-5?
In an emergency evacuation, seconds count. The rapid and reliable inflation of the escape slides is a non-negotiable safety requirement. The Goodrich 5A3274-5 is the only component certified by the aircraft manufacturer to perform this task. Using a genuine, fully traceable OEM part is the only way to ensure the cylinder has a certified history, has passed all required pressure tests, and is charged with the correct, specified gas mixture. For a component this critical to passenger and crew survival, there is absolutely no substitute.
Order Your 5A3274-5 Evacuation Cylinder Now
Ensure the integrity and readiness of your aircraft's life-saving emergency evacuation system with genuine, certified OEM components. Visit Airparts.aero to inquire about new or serviceable 5A3274-5 inflation cylinders today.
The 5A3274-5 cylinder works in conjunction with an aspirator to inflate the slide. When the valve is activated, the high-pressure gas is not routed directly into the slide, but is first directed through a venturi-like device called an aspirator. The high velocity of the escaping gas creates a powerful low-pressure area (Bernoulli's principle) that sucks in a massive volume of ambient air from the surrounding atmosphere. This air mixture is what actually inflates the slide. This system is a force multiplier, allowing a relatively small and light high-pressure cylinder to inflate a very large slide structure in an extremely short amount of time, a critical innovation for aircraft safety.
Note: This is a flight-critical, life-saving, and high-pressure hazardous material component. Handling, shipping, and all maintenance actions must be performed by certified technicians at a qualified Part 145 repair station with the appropriate safety equipment and ratings. The unit has a fixed service life and must be tracked by its serial number in the aircraft's records.
