and projects by State and local governments. Sec. 154. Updating airport noise exposure maps. Sec. 155. Stage 3 aircraft study. Sec. 156. Addressing community noise concerns. Sec. 157. Study on potential health and economic impacts of overflight noise. Sec. 158. Environmental mitigation pilot program. Sec. 159. Aircraft noise exposure. Sec. 160. Community involvement in FAA NextGen projects located in metroplexes. Sec. 161. Critical habitat on or near airport property. Sec. 162. Clarification of reimbursable allowed costs of FAA memoranda of agreement. Sec. 163. Lead emissions. Sec. 164. Aircraft noise, emission, and fuel burn reduction program. Sec. 165. Terminal sequencing and spacing. Sec. 166. Noise and health impact training. Sec. 167. Airport noise mitigation and safety study. Sec. 168. Judicial review for proposed alternative environmental review and approval procedures. Title II—FAA Safety Certification Reform Subtitle A—General Provisions Sec. 201. Definitions. Sec. 202. Safety Oversight and Certification Advisory Committee. Sec. 203. Performance standards for firefighting foams. Subtitle B—Aircraft Certification Reform Sec. 211. Aircraft certification performance objectives and metrics. Sec. 212. Organization designation authorizations. Sec. 213. ODA review. Sec. 214. Type certification resolution process. Sec. 215. Review of certification process for small general aviation airplanes. Subtitle C—Flight Standards Reform Sec. 231. Flight standards performance objectives and metrics. Sec. 232. FAA task force on flight standards reform. Sec. 233. Centralized safety guidance database. Sec. 234. Regulatory Consistency Communications Board. Subtitle D—Safety Workforce Sec. 241. Safety workforce training strategy. Sec. 242. Workforce review. Subtitle E—International Aviation Sec. 251. Promotion of United States aerospace standards, products, and services abroad. Sec. 252. Bilateral exchanges of safety oversight responsibilities. Sec. 253. FAA leadership abroad. Sec. 254. Registration, certification, and related