In codeshare and operating airlines, flight segments have the same code as the valid airline, but are operated by other airlines. The ITA table is checked between the valid airline and the airline defined in DEI50. Note: DEI50 is an SSIM message that relates to comments displayed in a flight information (DO) message. 50 Duplicate Leg Cross Reference – Operation Leg Identification is the marketing airline`s comment indicating the operating flight number. How to view interline ticketing agreements of a valid airline or between two airlines with TGAD entry. 2. To check the interline agreement between two airlines, enter: TGAD-YY/ZZ (YY being the second valid airline and ZZ). Don`t confuse online ticketing agreements with codeshare or airlines: Important: Airline agreements should not be reciprocal. The Interline Ticketing Agreement (ITA) table refers to the list of airlines that have entered into an existing ticketing agreement with other airlines. Interlining is when flights are mixed from different airline codes in the PNR route. In this case, the ITA table is checked. 6X and YY have an electronic ITA, which makes it possible to obtain an E-Ticket on the LH plates. However, flight 6X is operated by another airline (another company) and the issuance of 6X tickets is therefore refused.
In case of problems, always check if there are flights on the route made by another company (codeshare). Note: if there is no code sharing, if the ticket is to be issued under the LH mark, Resolution 852 is violated. The example above means that 7X flights can be booked on the 6X plate. The ITA table is checked when using the TTP/ET/TKT 1 input. To display this table, type: TGAD-YY (YY being the two-letter validated airline code). . . .