An installation device for installing a lining panel in an aircraft, comprising: - a main beam having a first main beam section and a second main beam section; - a hinge pivotably connecting a first end of the first main beam section and a first end of the second main beam section with each other such that the first main beam section can be pivoted relative to the second main beam section about an axis aligned perpendicular to a longitudinal axis of the first main beam section; - a first movable beam provided at a second end of the first main beam section such that it is movable relative to the first main beam section along the longitudinal axis thereof; - a second movable beam provided at a second end of the second main beam section such that it is movable relative to the second main beam section along a longitudinal axis thereof; - a first longitudinal element is connected to an end of the first movable beam facing away from the first main beam section; and - a second longitudinal element is connected to an end of the second movable beam facing away from the second main beam section, wherein the first longitudinal element and/or the second longitudinal element is/are adapted to extend over edges of a lining panel aligned perpendicular to the longitudinal axis of the installation device when used for installing the lining panel so that the first longitudinal element and/or the second longitudinal element is/are graspable when the first and/or the second movable beam (57, 59) is covered by the lining panel, the installation device characterized in that an end of the first longitudinal element facing away from the first movable beam is connected to a first hook, and/or wherein an end of the second longitudinal element facing away from the second movable member is connected to a second hook, the first and/or second hook (64, 66) adapted for suspending the installation device from a fixing structure. - a main beam having a first main beam section and a second main beam section; - a hinge pivotably connecting a first end of the first main beam section and a first end of the second main beam section with each other such that the first main beam section can be pivoted relative to the second main beam section about an axis aligned perpendicular to a longitudinal axis of the first main beam section; - a first movable beam provided at a second end of the first main beam section such that it is movable relative to the first main beam section along the longitudinal axis thereof; - a second movable beam provided at a second end of the second main beam section such that it is movable relative to the second main beam section along a longitudinal axis thereof; - a first longitudinal element is connected to an end of the first movable beam facing away from the first main beam section; and - a second longitudinal element is connected to an end of the second movable beam facing away from the second main beam section, wherein the first longitudinal element and/or the second longitudinal element is/are adapted to extend over edges of a lining panel aligned perpendicular to the longitudinal axis of the installation device when used for installing the lining panel so that the first longitudinal element and/or the second longitudinal element is/are graspable when the first and/or the second movable beam (57, 59) is covered by the lining panel, the installation device characterized in that an end of the first longitudinal element facing away from the first movable beam is connected to a first hook, and/or wherein an end of the second longitudinal element facing away from the second movable member is connected to a second hook, the first and/or second hook (64, 66) adapted for suspending the installation device from a fixing structure.