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 fees. Title III—Safety Subtitle A—General Provisions Sec. 301. FAA technical training. Sec. 302. Safety critical staffing. Sec. 303. International efforts regarding tracking of civil aircraft. Sec. 304. Aircraft data access and retrieval systems. Sec. 305. Advanced cockpit displays. Sec. 306. Marking of towers. Sec. 307. Cabin evacuation. Sec. 308. ODA staffing and oversight. Sec. 309. Emergency medical equipment on passenger aircraft. Sec. 310. HIMS program. Sec. 311. Acceptance of voluntarily provided safety information. Sec. 312. Flight attendant duty period limitations and rest requirements. Sec. 313. Secondary cockpit barriers. Sec. 314. Aviation maintenance industry technical workforce. Sec. 315. Critical airfield markings. Sec. 316. Regulatory reform. Sec. 317. FAA and NTSB review of general aviation safety. Sec. 318. Call to action airline engine safety review. Sec. 319. Special rule for certain aircraft operations. Sec. 320. Exit rows. Sec. 321. Comptroller General report on FAA enforcement policy. Subtitle B—Unmanned Aircraft Systems Sec. 331. Definitions. Sec. 332. Codification of existing law