Engines, series by series
The FAA records an engine code for 262,960 aircraft, 2,431 different series in all. Each one has a page: how many aircraft carry it, which models it is fitted to, where they are and who operates them. The most common ones are listed here; any aircraft page links to its engine's page.
27,316
Lycoming O-320 series
piston (reciprocating) · 180 hp
12,781
Continental O-470 series
piston (reciprocating) · 230 hp
11,933
Lycoming O-360 / VO-360 series
piston (reciprocating) · 180 hp
9,484
Continental IO-520 series
piston (reciprocating) · 285 hp
8,790
Continental O-200 series
piston (reciprocating) · 100 hp
8,560
Lycoming IO-360 series
piston (reciprocating) · 180 hp
7,964
Continental A65 / C65 series
piston (reciprocating) · 65 hp
6,622
Continental O-300 series
piston (reciprocating) · 145 hp
6,134
Lycoming O-235 series
piston (reciprocating) · 115 hp
5,244
Lycoming O-540 series
piston (reciprocating) · 250 hp
5,079
Lycoming TIO-540 series
piston (reciprocating) · 310 hp
4,723
Continental IO-470 series
piston (reciprocating) · 260 hp
Lycoming 92,854 aircraft · 55 series listed
O-320 series 27,316O-360 / VO-360 series 11,933IO-360 series 8,560O-235 series 6,134O-540 series 5,244TIO-540 series 5,079IO-540 series 4,218IO-360-L2A 2,634O-290 series 2,125IO-320 series 1,707O-360 series 1,066O-360-A1D 1,057IO-540-AE1A5 1,037IO-360-B4A 969AEIO-360 series 883IO-360-A1B6D 844IO-390-C3B6 775IO-540-AB1A5 768TIO-540-AJ1A 719O-360-A1A 600IO-360-M1A 549O-145B series 538TIO-540-AK1A 508TIO-540-AE2A 488AEIO-540 series 434O-360-A4M 418HIO-360 series 390YIO-390 series 330IO-390 series 312O-360-A1P 301O-540-F1B5 299TIO-541 series 273O-320-E2D 257O-360-J2A 254AEIO-580-B1A 252GO-480 series 246IO-540-D4A5 236R680E series 225R680 218CC363I 217IO-360-A1A 195IO-360-A1D6 191VO-435 series 190IO-360-B1E 184IO-360-M1B 184O-320-A2B 180IO-540-C4B5 179IO-360-B1G6 173YIO-540 SERIE 147O-360-C1G 142IO-360-A1B6 141YIO-360-M1B 136O-435A/O-435C 135O-320-D3G 134GO-435C&D series 130
Continental 85,404 aircraft · 37 series listed
O-470 series 12,781IO-520 series 9,484O-200 series 8,790A65 / C65 series 7,964O-300 series 6,622IO-470 series 4,723C85 series 4,671TSIO-520 series 4,115IO-550 series 3,077TSIO-550-K 2,778IO-550-N 2,768C90 series 2,149TSIO-360 series 1,908IO-360 series 1,853C145 series 1,828A75 / C75 series 1,504E185 series 1,109W670 series 987E225 series 979GO-300 series 810TSIO-550-C 480IO-360-ES 401GTSIO-520-C 387TSIO-550 series 382IO-550-B 373O-200 329C125 series 322O-200A 295IO-240-B 212O-200-D 209IO-550-C 199GTSIO-520 series 179R670-series 170GTSIO-520-F-K 169A-65-8 137IO-346 series 131TSIO-550-G 129
Rotax 12,311 aircraft · 18 series listed
Pratt & Whitney Canada 10,981 aircraft · 42 series listed
PT6A-60A 1,180PT6A-67P 507JT15D 5 series 451PT6A-65AG 431PW535E 412PT6A-42A 385JT15D-4 357PW306D1 347PT6A66D 323PW308C 303PT6E-67XP 291PW545 series 283PT6A-67B 277PT6A-34AG 271PT6A-52 261PW615F-A 258PT6A-114A 253PW610F-A 243PT6A-140 240PT6A-34 232PW545C 227PW306C 214PW535E1 210PT6B-37A 186PT6A series 182PW617F-E 179PT6A-42 173PW815GA 173PT6A-6 series 170PW814GA 170PT6E-66XT 164PT6A-66 series 161PT6A-135A 160JT15D-1 159PT6A-67AG 159PW545B 154PW306A 151PT6A-67A 148PW206B2 146530A 140PW307A 125PW207D1/D2 125
Pratt & Whitney 5,541 aircraft · 6 series listed
Rolls-Royce 2,638 aircraft · 10 series listed
Williams International 2,619 aircraft · 6 series listed
General Electric 2,597 aircraft · 7 series listed
CFM International 2,030 aircraft · 5 series listed
Honeywell 1,959 aircraft · 7 series listed
Franklin 1,652 aircraft · 4 series listed
Allison (Rolls-Royce) 1,404 aircraft · 4 series listed
International Aero Engines 857 aircraft · 4 series listed
AiResearch (Honeywell) 845 aircraft · 3 series listed
Rolls-Royce Deutschland 823 aircraft · 3 series listed
Turbomeca (Safran) 784 aircraft · 4 series listed
Jabiru 782 aircraft · 3 series listed
Garrett (Honeywell) 695 aircraft · 1 series listed
Jacobs 643 aircraft · 3 series listed
Austro Engine 571 aircraft · 3 series listed
Safran 456 aircraft · 2 series listed
Volkswagen (converted) 374 aircraft · 1 series listed
Subaru (converted) 349 aircraft · 1 series listed
Fairchild (Ranger) 292 aircraft · 1 series listed
GE Honda Aero Engines 210 aircraft · 1 series listed
Superior Air Parts 201 aircraft · 1 series listed
CubCrafters 192 aircraft · 1 series listed
Wright 185 aircraft · 1 series listed
Vedeneyev 174 aircraft · 1 series listed
BMW Rolls-Royce 163 aircraft · 1 series listed
Kinner 156 aircraft · 1 series listed
HKS 155 aircraft · 1 series listed
Warner 150 aircraft · 1 series listed
Titan (Continental) 128 aircraft · 1 series listed
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 5, 2026. The FAA codes most engines at the level of a series rather than the exact variant, and leaves the code blank for about one aircraft in eight; aircraft with no engine (gliders, balloons) and amateur-built aircraft with an unlisted engine are not counted here.