EASA SIB 2018-14: Use of Quarter-Turn Ball Valves on Liquid Gas Cylinders in Balloon Operations

What to do

Operators of hot air balloons and hot air airships are recommended to install approved quarter-turn ball valves on propane fuel cylinders where not already fitted. They should also include instructions on the emergency use of these valves in passenger pre-flight briefings. For installation assistance, operators should contact EASA or the relevant type design approval holder. There are no mandatory compliance deadlines as this is an informational bulletin.

Summary

EASA Safety Information Bulletin 2018-14 is an airworthiness bulletin addressing the use of quarter-turn ball valves on liquid propane gas cylinders in hot air balloons and hot air airships. It applies to all hot air balloons and hot air airships listed in the EASA Balloons and Airships product lists. The bulletin highlights the safety benefits of quarter-turn valves over multi-turn valves in enabling quick shut-off of propane fuel in emergency situations.

What changed

EASA SIB 2018-14 introduces a recommendation for operators to use approved quarter-turn ball valves on propane fuel cylinders instead of multi-turn valves. It emphasizes the advantages of quarter-turn valves, such as faster and clearer operation, which can reduce the risk and severity of fires caused by propane leaks. The bulletin does not mandate changes but provides safety guidance based on accident investigations.

Why it matters

This bulletin matters because it addresses a known safety concern related to propane leaks and fires in balloon operations. Using quarter-turn valves can improve emergency response times and potentially save lives by allowing rapid fuel shut-off. Operators, maintenance personnel, and compliance teams should be aware of this recommendation to enhance operational safety and passenger survivability.