US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDSUBCHAPTER c: EMISSION STANDARDS AND LIMITATIONS FOR STATIONARY SOURCESPart 211 — DEFINITIONS AND GENERAL PROVISIONSSubpart B211.30035 Ill. Adm. Code 211.300Aircraft Fluid SystemsLast amended: 2021Year: 2026Length: 22 wordsOfficial source Section 211.300 Aircraft Fluid Systems " Aircraft fluid systems " means those systems that handle hydraulic fluids, fuel, cooling fluids, or oils.Previous35 Ill. Adm. Code 211.290Next35 Ill. Adm. Code 211.303