SIBA Capacitor protection fuses can easily be fitted direct onto capacitor bushings, because they are fitted with threaded holes at both ends.

The lighting device comprises at least a metal sleeve with a female thread, a printed circuit board, a LED, a microswitch, a spring electrode, a battery and a rear metal cover.

Failure of bearing bush fixture is investigated in accessory gearbox of aeroengine. An improved fixing stud with interference is used to fix the bearing bush.