Thanks for the replies. Another question - again a simulator feature. Engine fire warning is actuated by instructor. The overheat comes on immediately (and MC) and it takes 5 seconds before the fire warning sounds (plus light in handle etc).
I understand that this delay between overheat and fire warning is a feature olf old 737-300 simulators. In later version simulators the actuation of the fire warning on the instructor panel causes simultaneous overheat indication and fire warning.
Has anyone else struck this delay feature in the 737-300 simulators you have sat in? I am interested in case it is a defect in the simulator rather than an expected event