Six Characters
Summary
Six Characters (Part 2 in the Iron Core series) explores what the PNR locator actually contains and why the e-ticket line uses a non-existent currency. It explains the five mandatory IATA elements, decodes a real Amadeus PNR example, and dives into IATA fare construction with Neutral Units of Construction (NUC) and exchange rates, plus the significance of tour codes for corporate billing. The piece highlights the enduring complexity of aviation data structures and the difference between various identifiers across systems.