77 aircraft - 31 Wellingtons, 20 Halifaxes, 14 Lancasters, 9 Stirlings, 3 Hampdens - to the Gnome & Rhone factory. 4 Wellingtons and I Halifax lost.
Later photographic cover showed little or no damage to the factory. A local report says that 38 houses were destroyed and 49 damaged, with 34 French people being killed and 167 injured.
source: The Bomber Command War Diaries, Martin Middlebrook and Chris Everitt
419 Moose Squadron(Moosa Aswayita). Wellington aircraft X 3715 crashed at Argenteuil, France during a bombing attack against the Gnome-Rhone engine factory at Gennevilliers, France
Bomber Command Museum Monthly ORB