{"data":{"id":"us/14-cfr-34.2","jurisdiction":"us","citation":"14 CFR 34.2","heading":"Abbreviations.","body":"The abbreviations used in this part have the following meanings in both upper and lower case:\nCO2 Carbon dioxide\nCO Carbon monoxide\nEPA United States Environmental Protection Agency\nFAA Federal Aviation Administration, United States Department of Transportation\ng Gram(s)\nHC Hydrocarbon(s)\nHP Horsepower\nhr Hour(s)\nH2O Water\nkg Kilogram(s)\nkJ Kilojoule(s)\nkN Kilonewton(s)\nkW Kilowatt(s)\nlbf Pound force\nLTO Landing and takeoff\nm Meter(s)\nmg Milligram(s)\nµg Microgram(s)\nmin Minute(s)\nMJ Megajoule(s)\nNOX Oxides of nitrogen\nnvPM Non-volatile particulate matter\nnvPMmass Non-volatile particulate matter mass\nnvPMMC Non-volatile particulate matter mass concentration\nnvPMnum Non-volatile particulate matter number\nPa Pascal(s)\nrO Rated output\nrPR Rated pressure ratio\nsec Second(s)\nSP Shaft power\nSN Smoke number\nT Temperature in degrees Kelvin\nTIM Time in mode\n°C Degrees Celsius\n% Percent","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 34—FUEL VENTING AND EXHAUST EMISSION REQUIREMENTS FOR TURBINE ENGINE POWERED AIRPLANES","Subpart A—General Provisions"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"e0ef7202b266b624f1fa4f2d595c097ee684f1b7bc278ccbdb9e9b2c40a874e2","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-34.1","next":"us/14-cfr-34.3"},"notice":"GroundRules: Original legal text. Not legal advice."}