Remarks: A couple of days before, from this aircraft's cockpit a gun was accidentaly shut. The bullet went through the fuselage making a hole and also went to the plane next to it and made another hole into a Tuifly B737/800. The bullet ended up at the Tui's cargo hold. Fortunately nobody was injured. The incident is under investigation. The plane is now traveling with a piece of metal covering the hole left by the shot. You can clearly see it underneath the cockpit windows.