Hello
According to french air service chronology, a Nieuport 24bis #4641 was lost september 5th 1917.
It belonged to escadrille N92 based at Belrain (Saint Mihiel area).
Its pilot, POW, was caporal Louis Charton, actually a US citizen born in New York.
I don't know the circumstances of the loss.
In french service, the aircraft may have look like this :
http://gaubs.free.fr/ESCADRILLES/SPA92/Photos/N11.htm
gilles