Aviation Dictionary

Integral fuel tank

A portion of the aircraft structure, usually a wing, which is sealed off and used as a fuel tank. When a wing is used as an integral fuel tank, it is called a “wet wing.”

Dictionary Term

Integral fuel tank

Definition

A portion of the aircraft structure, usually a wing, which is sealed off and used as a fuel tank. When a wing is used as an integral fuel tank, it is called a “wet wing.”

References

Airplane Flying Handbook · Federal Aviation Administration · 2021