The BMW M52 is a straight-6 DOHC petrol engine which was produced from 1994–2000.
The Metropolitan Transportation Authority (MTA) operates a number of bus routes in Staten Island, New York, United States.
S-phrases are defined in Annex IV of European Union Directive 67/548/EEC: Safety advice concerning dangerous substances and preparations.
The SIAI S.52 was an Italian fighter prototype of 1924.
The Sikorsky S-52 was a utility helicopter developed by Sikorsky Aircraft in the late 1940s.