503 (disambiguation)

503 denotes:

  • The year 503 AD
  • The year 503 BC
  • E 503, the food additive ammonium bicarbonate, a leavening agents

Technology:

  • The HTTP status code 503, see HTTP Status Code # 5xx - Server Error
  • Rh 503, a single-barrel, externally driven machine gun of the German company Rheinmetall Defence
  • Rotax 503, one of a number of small piston engines for aerospace applications
  • Sachs 503, a single-cylinder scooter engine of the German manufacturer Fichtel & Sachs

Roads:

  • Federal highway 503 in Schleswig -Holstein
  • Project 503 of the Gulag, a railway line in northern West Siberia, see Arctic Circle Railway
  • Route nationale 503, the French National Road 1933-1973

Transportation:

  • Avro 503, a double-decker aircraft of the British manufacturer Avro
  • BMW 503, a two-door sports car in the Bavarian Motor Works
  • Fiat 503, a car model of Fiat
  • Piaggio Gilera Eaglet 50 Type 503 Mini Chopper, a moped in the chopper style

See also:

  • ( 503) Evelyn, the main belt asteroid
  • NGC 503, an elliptical galaxy in the constellation Pisces
  • Disambiguation
(503) Evelyn
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