A gondola apparatus to be used for maintenance of a blade in an aerogenerator including a columnar tower , a nacelle provided on the tower , and the blade rotatably provided to the nacelle , the aerogenerator being configured to rotate the blade to operate a generator, the gondola apparatus comprising: a front scaffold frame horizontally extending in a direction crossing the tower , the front scaffold frame facing a back of the blade ; a first side scaffold frame horizontally movably attached to the front scaffold frame , the first side scaffold frame facing a side surface of the blade ; a second side scaffold frame horizontally movably attached to the front scaffold frame , the second side scaffold frame facing a side surface of the blade ; a stabilizing member attached over both sides of the front scaffold frame such that the stabilizing member is extendable and contractable to the tower , the stabilizing member abutting on an outer surface of the tower ; a first lifting device provided to the front scaffold frame ; a second lifting device attached to the first side scaffold frame such that the second lifting device is rockable; a third lifting device attached to the second side scaffold frame such that the third lifting device is rockable; a first drive device provided to the front scaffold frame , the first drive device being configured to horizontally drive the first side scaffold frame ; a second drive device provided to the front scaffold frame , the second drive device being configured to horizontally drive the second side scaffold frame ; a first traction rope provided between the first lifting device and an origin on a side of the nacelle ; a second traction rope provided between the second lifting device and the origin on the side of the nacelle ; and a third traction rope provided between the third lifting device and the origin on the side of the nacelle . a front scaffold frame horizontally extending in a direction crossing the tower , the front scaffold frame facing a back of the blade ; a first side scaffold frame horizontally movably attached to the front scaffold frame , the first side scaffold frame facing a side surface of the blade ; a second side scaffold frame horizontally movably attached to the front scaffold frame , the second side scaffold frame facing a side surface of the blade ; a stabilizing member attached over both sides of the front scaffold frame such that the stabilizing member is extendable and contractable to the tower , the stabilizing member abutting on an outer surface of the tower ; a first lifting device provided to the front scaffold frame ; a second lifting device attached to the first side scaffold frame such that the second lifting device is rockable; a third lifting device attached to the second side scaffold frame such that the third lifting device is rockable; a first drive device provided to the front scaffold frame , the first drive device being configured to horizontally drive the first side scaffold frame ; a second drive device provided to the front scaffold frame , the second drive device being configured to horizontally drive the second side scaffold frame ; a first traction rope provided between the first lifting device and an origin on a side of the nacelle ; a second traction rope provided between the second lifting device and the origin on the side of the nacelle ; and a third traction rope provided between the third lifting device and the origin on the side of the nacelle . <EOS>