An aircraft fuel control and shut-down system

摘要

A shut-down arrangement comprises a shut-off actuation device (20) operable under the control of a control unit (28), a switch (34) whereby a first shut-down signal can be supplied to the control unit (28) and whereby a second shut-down signal can be supplied to the shut-off actuation device (20), and delay means (40) whereby the transmission of the second shut-down signal to the shut-off actuation device (20) is delayed relative to the transmission of the first shut-down signal to the control unit (28).