On 7 January 1941, "Illustrious" set sail to provide air cover for convoys to Piraeus, Greece and Malta as part of Operation Excess. For this operation, her fighters were reinforced by a detachment of three Fulmars from 805 Squadron. During the morning of 10 January, her Swordfish attacked an Italian convoy without significant effect. Later that morning three of the five Fulmars on Combat Air Patrol (CAP) engaged three SM.79s at low altitude, claiming one shot down. One Fulmar was damaged and forced to return to the carrier, while the other two exhausted their ammunition and fuel during the combat and landed at Hal Far airfield on Malta. The remaining pair engaged a pair of torpedo-carrying SM.79s, damaging one badly enough that it crashed upon landing. They were low on ammunition and out of position, as they chased the Italian aircraft over from "Illustrious". The carrier launched four replacements at 12:35, just when 24–36 Junkers Ju 87 Stuka dive bombers of the First Group/Dive Bomber Wing 1 (I. Gruppe/Sturzkampfgeschwader (StG) 1) and the Second Group/Dive Bomber Wing 2 (II. Gruppe/StG 2) began their attack, led by Paul-Werner Hozzel. Another pair were attempting to take off when the first bomb struck just forward of the aft lift, destroying the Fulmar whose engine had failed to start and detonating high in the lift well; the other aircraft took off and engaged the Stukas as they pulled out of their dive.