Balloon Flying Menu >  Preparing For Flight > Flight Planning > Special Circumstances > Cold weather flying

The two main considerations for cold weather flying are keeping the pilot, crew, and passengers warm, and maintaining adequate pressure in the balloon’s fuel system.

Layered clothing that entraps warm air is standard cold-weather gear. A hat is important, as significant body heat escapes from the head. Warm gloves and footwear are a must. Remember to have antifreeze in the chase vehicle. Carry chains, a shovel, and a windshield wiper/scraper if there is a possibility of snow.

As propane gets colder, it has less pressure. To ensure adequate pressure in cold weather, add nitrogen (using manufacturer-approved kits), heat the propane, or keep the propane warm. There are several sources that offer tank covers and heating coils. Inspect electrically heated tank covers often, as normal wear and tear and tie-down straps can cause an electrical short circuit, which could start a serious fire during heating. Use tank heaters with extra care. Never heat your tanks within 50 feet of an open flame, or near an appliance with a pilot light, or in a closed room without natural ventilation.