Meeting All Requirements
For the upper wing box, a highest degree of flexibility is necessary to compensate for extensive movements of the wings. Since passengers see the wings throughout the flight, a flawless finish adds significantly to their perception of the brand -neat and clean surfaces inspire trust.
On the lower wing box, high resistance to chemicals is paramount.
For both areas, a process as efficient and sustainable as possible is desirable, to get the aircraft back into service quickly and avoid unplanned maintenance for wings.