Takeoff Warning System (TOWS)

Description

A Takeoff Configuration Warning System is a safety device intended to help ensure that takeoff is not attempted with the aircraft in an inappropriate or unsafe configuration.

Requirement

Since the late 1970's regulations have required that a Takeoff Configuration Warning System be fitted in all jet aircraft and in non-jet aircraft with a maximum takeoff weight exceeding 6000 pounds (2725 kg) unless it can be demonstrated that a lift device or trim device that affects the takeoff performance would not compromise safety when selected to other than an approved takeoff position. The takeoff warning system is intended to serve as "back-up" for the normal checklist, particularly in unusual situations where the checklist has been interrupted or the takeoff delayed. A takeoff warning system must meet the following requirements: