Newcastle moved a point behind Lyon in Pool 2 of the Challenge Cup as they beat the French outfit 48-29 at Kingston Park.
After two losses from their first three games, the Falcons needed this win and played well to pick up all five points in Sunday's fixture.
First-half tries from Juan Socino (2), Tane Takulua and Joel Hodgson sent them into the break 34-10 up, with Hodgson kicking 14 points.
After the turnaround it was more of the same from Newcastle as Zach Kibirige and Callum Chick also crossed in a high-scoring success.
Lyon's try-scorers were Thibaut Regard, Pierre-Louis Barassi, Franck Romanet and Paul Bonnefond, with Ospreys sitting pretty nine points clear of the French team with just two rounds remaining in the pool stage.
Tries: Socino 2, Takulua, Hodgson, Kibirige, Chick
Cons: Hodgson 5, Willis
Pens: Hodgson 2
Tries: Regard, Barassi, Romanet, Bonnefond
Cons: Porical 3
Newcastle Falcons: 15 Tom Catterick, 14 Dan Marshall, 13 Fred Burdon, 12 Juan Socino, 11 Zach Kibirige, 10 Joel Hodgson, 9 Tane Takulua, 8 Callum Chick, 7 Mark Wilson, 6 Dan Temm, 5 Nick Civetta, 4 Calum Green, 3 Jon Welsh, 2 Ben Sowrey, 1 Alex Rogers
Replacements: 16 David Nelson, 17 Rob Vickers, 18 Paddy Ryan, 19 Glen Young, 20 Harrison Orr, 21 Sam Egerton, 22 Craig Willis, 23 Belisario Agulla
Lyon: 15 Jerome Porical, 14 Thibaut Regard, 13 Paul Bonnefond, 12 Pierre-Louis Barassi, 11 Franck Romanet, 10 Romain Loursac, 9 Augustin Figuerola, 8 Tai Tuifua, 7 Didier Tison, 6 Dylan Cretin, 5 Maselino Paulino, 4 Josh Bekhuis, 3 David Attoub, 2 Cameron Mapusua, 1 Sami Mavinga
Replacements: 16 Ti’i Paulo, 17 Alexandre Menini, 18 Hamza Kaabèche, 19 Andres Zafra Tarazona, 20 Deon Fourie, 21 Jacques Louis Potgieter, 22 Nicolas Durand, 23 Baptiste Couilloud
Referee: Gary Conway (Ireland)
Assistant Referees: Eddie Hogan (Ireland), Barrie O’Connell (Ireland)
TMO: Martin Fox (England)