• Connecting ground hydraulic test equipment to aircraft service ports.
  
  

• Coupling fuel servicing hoses for refuel and defuel operations.
  
  

• Attaching pneumatic supply lines for oxygen and air‑conditioning ground support.
  
  

• Integrating into bench‑test manifolds for component functional checks.

• What maintenance is required to keep the coupling serviceable?

Inspect O‑rings and poppet seating surfaces for wear or contamination during routine A‑checks and replace seals as needed.

• Is this coupling interchangeable with other quick‑disconnect standards?

It follows standard aviation dimensions, but always cross‑reference with the Illustrated Parts Catalog to confirm form‑fit compatibility.

• How do I verify the coupling is properly engaged?

A tactile “click” and visible alignment marks ensure the poppet is fully seated and sealed.