What is the main disadvantage of cellulose nitrate dope compared to butyrate dope?

The main disadvantage of cellulose nitrate dope in comparison to butyrate dope is its significantly higher flammability. Cellulose nitrate is known for its volatile nature, which means it can easily ignite and burn rapidly, creating a safety hazard during application and while the aircraft is in service. This flammability concerns are critical in aviation, as it poses risks not only to the aircraft's integrity but also to the safety of personnel working with it.

Butyrate dope, on the other hand, exhibits improved flammability characteristics, making it a better choice in situations where fire safety is a concern. Additionally, butyrate dope generally offers better durability and flexibility than cellulose nitrate dope, which contributes further to its preference in certain applications. Understanding these properties helps technicians make informed decisions regarding the materials used for aircraft finishing and repair, prioritizing both safety and performance.