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Aircraft Engines Aircraft Engine Families 34 engine families with FAA service difficulty reports, airworthiness directives, and investigated occurrence history.
CFM56 CFM International · 7,914 engine-system reports · 60 ADs · 1995–2026 LEAP CFM International · 432 engine-system reports · 52 ADs · 2018–2026 Pratt & Whitney GTF (PW1000G) Pratt & Whitney · 603 engine-system reports · 47 ADs · 2018–2026 V2500 International Aero Engines · 2,265 engine-system reports · 50 ADs · 1995–2026 PW4000 Pratt & Whitney · 3,486 engine-system reports · 78 ADs · 1995–2026 PW2000 Pratt & Whitney · 1,715 engine-system reports · 20 ADs · 1995–2026 JT8D Pratt & Whitney · 4,625 engine-system reports · 13 ADs · 1995–2026 JT9D Pratt & Whitney · 1,449 engine-system reports · 10 ADs · 1995–2026 Rolls-Royce Trent Rolls-Royce · 721 engine-system reports · 411 ADs · 2000–2026 RB211 Rolls-Royce · 1,404 engine-system reports · 81 ADs · 1995–2026 AE 3007 Rolls-Royce · 1,660 engine-system reports · 5 ADs · 1997–2026 CF6 GE Aerospace · 4,000 engine-system reports · 59 ADs · 1995–2026 CF34 GE Aerospace · 3,214 engine-system reports · 49 ADs · 1995–2026 GE90 GE Aerospace · 172 engine-system reports · 67 ADs · 1999–2026 GEnx GE Aerospace · 72 engine-system reports · 65 ADs · 2013–2026 CT7 GE Aerospace · 1,036 engine-system reports · 22 ADs · 1995–2026 PT6 Pratt & Whitney Canada · 4,558 engine-system reports · 35 ADs · 1995–2026 PW100 Pratt & Whitney Canada · 4,155 engine-system reports · 15 ADs · 1995–2026 JT15D Pratt & Whitney Canada · 568 engine-system reports · 2 ADs · 1995–2026 PW300 Pratt & Whitney Canada · 758 engine-system reports · 9 ADs · 1996–2026 PW500 Pratt & Whitney Canada · 656 engine-system reports · 4 ADs · 2000–2026 TPE331 Honeywell (Garrett) · 2,121 engine-system reports · 24 ADs · 1995–2026 TFE731 Honeywell (Garrett) · 891 engine-system reports · 14 ADs · 1995–2026 Arriel Safran Helicopter Engines · 1,470 engine-system reports · 124 ADs · 1995–2026 Allison 250 (M250) Rolls-Royce (Allison) · 3,927 engine-system reports · 0 ADs · 1995–2026 Lycoming O-320 Lycoming · 1,414 engine-system reports · 10 ADs · 1995–2026 Lycoming O-360 Lycoming · 2,603 engine-system reports · 11 ADs · 1995–2026 Lycoming O-540 Lycoming · 3,332 engine-system reports · 12 ADs · 1995–2026 Lycoming O-235 Lycoming · 451 engine-system reports · 0 ADs · 1995–2026 Continental O-470 Continental Aerospace · 583 engine-system reports · 5 ADs · 1995–2026 Continental IO-520 Continental Aerospace · 3,362 engine-system reports · 18 ADs · 1995–2026 Continental IO-550 Continental Aerospace · 703 engine-system reports · 16 ADs · 1995–2026 Rotax 912 BRP-Rotax · 0 engine-system reports · 26 ADs Austro E4 Austro Engine · 85 engine-system reports · 25 ADs · 2014–2026 Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).