Mildew

Definitions

• A gray or white parasite fungus which, under warm, moist conditions, can live on organic dirt found on balloon envelopes. The fungus waste materials attack the coating on the fabric.
• A type of fungus or mold that forms on fabric and leather in damp environments. Mildew weakens some materials and if it appears on a parachute canopy, the areas must be cleaned, repaired, or replaced.

References

• Balloon Flying Handbook, Federal Aviation Administration, 2024
• Parachute Rigger Handbook, Federal Aviation Administration, 2015