If the check from inside the cabin is not possible (due to soiled windows or insufficient lighting) , the wings must be checked from outside the airplane. If the check is unsatisfactory, de-icing/anti-icing must be repeated.
If the check from inside the cabin is not possible (due to soiled windows or insufficient lighting) , the wingsmust be checked from outside the airplane. If the check is unsatisfactory, de-icing/anti-icing must be repeated.