1a. Lufthansa Standby: This upgrade may be used on a standby basis, subject to availability, on the day of travel on any eligible Lufthansa flight in accordance with the terms and conditions of this certificate, except when booked in LH booking classes X, I, R, N, W, S and E. In addition L and T fares are also excluded for Intra-Europe flights. Please note: This upgrade requires a 14-day advanced notification to Mileage Plus in order to print and mail the certificate for presentation to Lufthansa on the day of departure. Please contact the MPI Service Center to have certificates printed.