4MF Advantages Hero Section

ENGINEERED FOR TODAY AND TOMORROW

ADAPTABLE BY DESIGN

4MF Simple Adjustments Section

Simple Adjustments. Powerful Flexibility.

The 4MF Fueling Cover Assembly was designed to evolve with changing ATA 103 standards. Its patent-pending hinge mechanism allows a single cover to quickly convert between lay-flat and non–lay-flat configurations.

Simply remove two hinge pins, relocate them into the lower holes, and the cover transitions to a fully lay-flat position, no special tools or retraining required.

This one design ensures compliance today and flexibility for whatever tomorrow brings.

4MF Hinge Mechanism Demo

Future-Proof by Design

4MF Future-Proof Design

Aviation standards evolve, and your equipment should too. The 4MF Fueling Cover Assembly isn't just compliant today — it's designed to adapt to tomorrow's requirements without costly replacements.

Built with aerospace-grade materials and precision engineering, every cover is manufactured in the USA to exceed industry standards. When regulations change, your investment is protected.

One cover. Multiple configurations. Zero obsolescence.

4MF VS. TRADITIONAL COVERS

FEATURE 4MF COVERS TRADITIONAL
Lay-Flat Design
Universal Fit
ATA 103 Compliant Varies
Buy American Act Compliant Varies

See It in Action

This short video demonstrates the adjustment process — showing exactly how two hinge pins are repositioned to achieve full lay-flat compliance.

Engineered for Every Installation

Most existing installations will not require any pit or flange modifications.

The 4MF Cover Assembly is a drop-in retrofit for the majority of current fueling systems, minimizing downtime and cost.

Its plug-and-play design installs quickly, while maintaining full aircraft load rating and 30 lb one-hand lift compliance.

4MF Cover Installation Diagram

Fits Most Existing Systems

Our engineering team can help assess your site for retrofittable compatibility — no major modifications required. Get started by sharing your project details.

Frequently Asked Questions

Do I need to replace my entire pit?

No. Most existing installations can be retrofitted without major modifications.

What's the difference between lay-flat and non-lay-flat?

The hinge pin location determines the opening angle — simply move the pins to change configurations.

Will I need special tools or training?

No. The conversion process uses standard components and takes minutes to complete.

Who can I contact for technical support?

Reach out to our team at [email protected].