Exhaust system repair is efficient

EAPR offers wide range of repair options
Reduce of hopeless cases

EPAR: The EPAR Exhaust System Technology Center is the competence center for the overhaul and repair of exhaust nozzles and centerbodies along with the other components that go into the exhaust system. As well as all the repairs contained in the applicable manual, EPAR offers a wide range of additional repair options. For this team there is no such thing as a hopeless case. 

The idea of preventive maintenance

The parts of a turbofan that belong to the exhaust system – this includes all the components behind the turbine rear frame – are subject to multiple stresses: the toll inflicted by mechanical stress, thermal stress and, last but not least, sonic fatigue means that these components have to be overhauled or repaired after an operating period of between five and eight years. Based on its fleet experience, the Exhaust System Technology Center team within Lufthansa Technik's Engine Parts and Accessories Repair (EPAR) is quite clear about one thing: The earlier the part comes into the shop, the cheaper it is to repair. In addition, a preventive repair can completely avoid damage occuring later on, reducing operating costs further. 

Repair solution exceeds the manual

Once the component has arrived in the shop and been inspected, a number of standard manual repairs are available to deal with problems. However, in most cases these procedures do not go far enough. It is at this point that the particular strength of the EPAR unit becomes apparent: Lufthansa Technik is licensed to go beyond the procedures specified in the manual and offer its own repair solutions with the aid of a Change/Repair Approval Sheet (CRAS), for which authority approval is available (EASA and/or FAA). With the customer's agreement, this is then implemented, resulting in many cases in substantial savings. 

EPAR offers huge benefits

The significance of Lufthansa Technik's experience, the breadth of which is unrivalled, is manifest in other areas as well. Thus, for example, it was possible to specify a nozzle for the 747 fleet of a major customer which has been demonstrated to have a service life far in excess of that of the OEM part.
It is invariably well worthwhile having these expensive components properly inspected when they have developed defects, as the spare parts often cost more than half a million dollars and Lufthansa Technik is able to repair a lot more than is covered in the applicable manual.