Hello everyone
I am a French air traffic controller (nobody's perfect

) and a newcomer on PPrune. I am currently working on the deployment of LPV approachs in France.
I am looking for details about the procedures followed in case you lose GPS signal during final approach especially in the States where LPV are already in use with WAAS. I know they are not published and developed by every airline.
Are they the same in case of ILS failure?
Thank you for your help