A further 26 aircraft were damaged but repairable. Parts that are not repairable are considered consumable parts. Only minor injuries were reported, and the trainset suffered repairable damage. Mean time to repair (MTTR) is a basic measure of the maintainability of repairable items. Another 84 planes had repairable non-combat damage. Despite then rolling into a ditch, only minor repairable damage was sustained to two bogies. However, welds result in a waterproof deck which is strong and easily repairable. Damage to the infrastructure was extensive, though repairable and less than expected. Seat cushions may lose their softness or become discolored and are not repairable. Many Me 262s were found in readily repairable condition and were confiscated. Hide glue joints are reversible and repairable. Although failure were common, it was easily repairable. Though still repairable, it was demolished in 1969. Wire wrap is one of the most repairable systems for assembling electronics. Also, to make an assembly more repairable, wires are applied in layers.