IMPROVEMENTS IN AIRCRAFT DOORS

摘要

An alarm system for an aircraft door comprises; a sensor (22) for sensing when the door operating handle is about to be gripped by an operator, an aural alarm (35) associated with the sensor and operable to sound when the sensor detects that the handle is about to be gripped, means (32, 38) for receiving a signal activated in response to an event which occurs remote from the door and arming the sensor and/or aural alarm when the signal is received by the receiving means.