---
kind: "section"
citation: "14 C.F.R. § 25.703"
title: "14"
number: "25.703"
heading: "Takeoff warning system."
url: "https://uscodex.org/cfr/14/25.703"
---

# §25.703. Takeoff warning system.


A takeoff warning system must be installed and must meet the following requirements:

- (a) The system must provide to the pilots an aural warning that is automatically activated during the initial portion of the takeoff roll if the airplane is in a configuration, including any of the following, that would not allow a safe takeoff:
  - (1) **The wing flaps or leading edge devices are not within the approved range of takeoff positions.**
  - (2) Wing spoilers (except lateral control spoilers meeting the requirements of [§ 25.671](/cfr/14/25.671.md)), speed brakes, or longitudinal trim devices are in a position that would not allow a safe takeoff.
- (b) The warning required by [paragraph (a)](#a) of this section must continue until—
  - (1) The configuration is changed to allow a safe takeoff;
  - (2) Action is taken by the pilot to terminate the takeoff roll;
  - (3) The airplane is rotated for takeoff; or
  - (4) **The warning is manually deactivated by the pilot.**
- (c) The means used to activate the system must function properly throughout the ranges of takeoff weights, altitudes, and temperatures for which certification is requested.

## Notes

### Amendments

[Amdt. 25-42, 43 FR 2323, Jan. 16, 1978]

### 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

[Amdt. 25-42, 43 FR 2323, Jan. 16, 1978]