SUJET :

Could somebody please tell me the replacement for the float switch in the fuel tank for a 1090. I am assuming its the float/sender as the fuel gauge sometimes shows a reading and other times it shows empty.

Hello Nigel,
it is not easy to find the right replacement for the fuel probe, which is more a float potentiometer rather than a float switch.
There are few articles written on this topic, as :
www.clubfeeling1090.fr/moteur/equipement...teur-jauge-carburant
www.clubfeeling1090.fr/moteur/equipements/jauge-carburant
and this forum post :
www.clubfeeling1090.fr/forum/sujets-gene...0-jauge-gaz-oil#2337
where the issue is explained : 6 holes old float vs 5 holes new float !
Hope it helps !...