[Laurent Rizzotti]

The book "La Luftwaffe face au débarquement allié" list 13 Fw 190 losses for 15 June 1944:

I./JG 1:
Fw 190 A-8 WNr 170737 "white 13", 1./JG 1, Lt Hans Gareis KIA, Saint Paul/Flers, air battle (against P-47 ?)
Fw 190 A-8, 2./JG 1, Uffz Wilhelm Woite unhurt, unknown place, air battle (against P-47 ?)
Fw 190 A-8 WNr 170735 "yellow 10", 3./JG 1, Uffz Horst Gabel KIA, Rabodanges/Falaise, air battle (against P-47 ?)

Confirmed by the Luftwaffe summary losses database:
3 aircraft destroyed by gunfire from enemy aircraft during operational flight, observed by enemy
1 aircraft damaged by gunfire from enemy aircraft during operational flight, not observed by enemy

I./JG 2:
Fw 190 A-8 Wnr 172655, 1./JG 2, Fw Heinrich Gawenat KIA, Evreux, air battle
Fw 190 A-8 WNr 171035, 2./JG 2, Fw Emil Burau KIA, Evreux, air battle
Fw 190 A-8 WNr 171054, 4./JG 2, Uffz Will Lang WIFA, Chartres, baled out after engine failure

Confirmed by the Luftwaffe summary losses database:
2 aircraft missing Due to enemy action
1 aircraft destroyed without enemy action on operational flight

III./JG 2
Fw 190 A-8 WNr 171611 (or 172611), 10./JG 2, Uffz Werner Krajl WIA, unknown place, enemy fighters

Confirmed by the Luftwaffe summary losses database:
1 aircraft destroyed by gunfire from enemy aircraft during operational flight, observed by enemy

I./JG 11
Fw 190 A-7 WNr 642539 "white 7", 1./JG 11, Uffz Gerhard Hübner MIA, unknown place, probably air battle
Fw 190 A-7 WNr 643701 "black 1", 1./JG 11, Oblt Fritz Engau WIA, unknown place, overturned on return to base after being hit in air battle
Fw 190 A lost, no details, probably air battle

Confirmed by the Luftwaffe summary losses database, but with only two total losses:
1 aircraft missing Due to enemy action
1 aircraft destroyed by gunfire from enemy aircraft during operational flight, observed by enemy
1 aircraft damaged by gunfire from enemy aircraft during operational flight, not observed by enemy

I./JG 26: nothing in Frappé, but two aircraft destroyed on the ground by enemy bombs according to the Luftwaffe summary losses database

II./JG 26
Fw 190 A-8 WNr 170712 "black 6", 6./JG 26, Ofw Alfred Günther KIA, Saint Hilaire/Orleans, air battle against P-51s escorting B-24s
Fw 190 A-8 WNr 730991 (or 730934) "brown 2", 7./JG 26, Oblt Waldemar Radener WIA, Dancy, air battle against P-51s escorting B-24s

Two losses confirmed by the Luftwaffe summary losses database:
1 aircraft destroyed by gunfire from enemy aircraft during operational flight, observed by enemy
1 aircraft destroyed without enemy action on operational flight (probably Günther who crashed into a river while trying to escape enemy fighters on the desk)

I./SKG 10
Fw 190 G-8/R3 WNr 190110 "yellow 4", 3./SKG 10, Fw Friedolin Böhlert MIA, unknown place, missing, no details

Confirmed by the Luftwaffe summary losses database:
1 aircraft missing Due to enemy action

Conclusion: from both above sources, the Luftwaffe lost 14 Fw 190 in France on 15 June 1944:
_ 11 missing or shot down by enemy aircraft (including the JG 26 one that crashed while trying to escape). Of these, 5 were lost probably against American fighters (P-47s, and P-51s escorting US heavy bombers)
_ 1 lost due to engine failure
_ 2 destroyed on the ground by bombs
Two more Fw 190s were damaged in air battles.

Frappé alos lists 19 Bf 109 losses for this day.