---
kind: "section"
citation: "14 C.F.R. § 26.31"
title: "14"
number: "26.31"
heading: "Definitions."
url: "https://uscodex.org/cfr/14/26.31"
---

# §26.31. Definitions.


For purposes of this subpart—

- (a) **Fleet Average Flammability Exposure—** has the meaning defined in Appendix N of [part 25](/cfr/14/part25.md) of this chapter.
- (b) Normally Emptied means a fuel tank other than a Main Fuel Tank. Main Fuel Tank is defined in [14 CFR 25.981(b)](/cfr/14/25.981.md?p=b).

## Notes

### Source

Source: Docket No. FAA-2005-22997, 73 FR 42499, July 21, 2008, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 106(g), 40113, 44701, 44702 and 44704.

### Source

Source: Docket No. FAA-2004-18379, 72 FR 63409, Nov. 8, 2007, unless otherwise noted.