---
kind: "section"
citation: "14 C.F.R. § 25.973"
title: "14"
number: "25.973"
heading: "Fuel tank filler connection."
url: "https://uscodex.org/cfr/14/25.973"
---

# §25.973. Fuel tank filler connection.


Each fuel tank filler connection must prevent the entrance of fuel into any part of the airplane other than the tank itself. In addition—

- (a) [Reserved]
- (b) Each recessed filler connection that can retain any appreciable quantity of fuel must have a drain that discharges clear of each part of the airplane;
- (c) Each filler cap must provide a fuel-tight seal; and
- (d) Each fuel filling point must have a provision for electrically bonding the airplane to ground fueling equipment.

## Notes

### Amendments

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-40, 42 FR 15043, Mar. 17, 1977; Amdt. 25-72, 55 FR 29785, July 20, 1990; Amdt. 25-115, 69 FR 40527, July 2, 2004]

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note).

### Source

Source: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.

### Amendments

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-40, 42 FR 15043, Mar. 17, 1977; Amdt. 25-72, 55 FR 29785, July 20, 1990; Amdt. 25-115, 69 FR 40527, July 2, 2004]