Airbus offers A320 enhancement package.

Airbus has developed a comprehensive avionics enhancement package for 320 Family aircraft called the In-Service Enhancement Package (ISEP). This new package is designed to help A320 Family operators adapt their fleet to compete in the increasingly challenging market conditions of today.

ISEP is a compilation of fully proven Airbus Service Bulletins, selected for their impact on residual value, and key airline drivers such as OR (Operational Reliability), DMC (Direct Maintenance Cost), spares costs, weight reduction and operational savings such as reduced fuel burn, through optimized route determination for example. It provides a core platform for bringing earlier aircraft to current production standards in important areas and is designed to bridge the gap between previous and later deliveries in terms of operational performance.

The package was formulated to enable a step change in capability in two key areas: Air Traffic Communications and Navigation. Concerning Navigation, the new Required Navigation Performance function (RNP) for example, contributes to the reduction of track miles and makes flight operations more flexible, thus reducing delays, flight cancellations or flight diversions. ISEP also provides the foundation for the requirements of future Air Traffic Management systems such as the Future Air Navigation System (FANS B). ISEP is claimed to offer opportunities for a quick return on investment thanks to operational savings, fleet harmonization, compounded by a positive effect on residual value.