ITEM 2. PROPERTIES Flight Equipment and Fleet Renewal As of December 31, 2019, American operated a mainline fleet of 942 aircraft. In 2019, we continued our extensive fleet renewal program, which has provided us with the youngest fleet of the major U.S. network carriers. During 2019, American took delivery of 24 mainline aircraft and retired 38 mainline aircraft. We are supported by our wholly-owned and third-party regional carriers that fly under capacity purchase agreements operating as American Eagle. As of December 31, 2019, American Eagle operated 605 regional aircraft. During 2019, we increased our regional fleet by a net of ten aircraft, including the addition of 46 regional aircraft and retirement of 36 regional aircraft. As of December 31, 2019, American’s mainline fleet consisted of the following aircraft: Mainline (1) On March 13, 2019, a directive from the FAA grounded all U.S.-registered Boeing 737 MAX aircraft. We have removed all Boeing 737 MAX flying from our flight schedule through August 17, 2020 and will continue to assess this timeline. 37 Average  Seating Capacity Average Age (Years) Owned Leased Total Airbus A319 128 15.7 21 111 132 Airbus A320 150 18.7 10 38 48 Airbus A321 179 7.4 165 53 218 Airbus A321neo 196 0.4 2 10 12 Airbus A330-200 247 8.0 15 — 15 Airbus A330-300 291 19.4 4 5 9 Boeing 737-800 163 10.1 132 172 304 Boeing 737-8 MAX  (1) 172 1.4 9 15 24 Boeing 757-200 180 20.1 31 3 34 Boeing 767-300ER 209 19.9 17 — 17 Boeing 777-200ER 273 19.0 44 3 47 Boeing 777-300ER 304 5.8 18 2 20 Boeing 787-8 234 4.1 20 — 20 Boeing 787-9 285 2.2 17 5 22 Embraer 190 99 12.1 20 — 20 Total 11.0 525 417 942