Person to Person messaging

Today most messaging is via typical email systems but still a proportion of inter personal airline messaging consists of Type B.   Either the type B messages are via SITATEX or embedded in host airline systems as Type B.

Type B was unique to the Air Transport industry and consisted of a 7 letter address line.

Take the example LHRLLAA:

The first 3 letters e.g. LHR  referenced the location (Heathrow Airport ).

The next two letters referenced a department, e.g LL  (Baggage Tracing)

The final two letters referenced the Airline e.g. AA  (American Airlines)