IATA Air Waybill (AWB) 7-Digit Mod-7 Check Digit Verifier
Verifies IATA 11-digit Air Waybill numbers using the standard Modulus-7 algorithm.
Notice: engineering verification utility. Use test or de-identified data and verify results independently before relying on them.
How it works
Standard: IATA Resolution 600a Air Waybill Formatting
Formula: First 8 digits modulo 7 equals the 3-digit suffix or 9th digit check digit
Checks: 11-digit AWB format string
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