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What does 503 Stand For in Airports & Locations ?
For 503 we have found 10 definitions.
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What does 503 mean? We know 10 definitions for 503 abbreviation or acronym in 2 categories. Possible 503 meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Please look for them carefully.
503 Stands For:
Rank | Abbreviation | Meaning | |
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***** | 503 | Service Unavailable |