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LEAP Engine

CFM International · turbofan · 432 engine-system SDR reports · 51 ADs

23,000–35,000 lbfThrust
2013First Run
In productionStatus
CFM56 successor; LEAP-1A powers the A320neo family, LEAP-1B the 737 MAX.Note

Reported engine systems (FAA SDR)

  • Engine - Turbine/Turboprop171 (39.6%)
  • Engine Fuel & Control109 (25.2%)
  • Engine Air57 (13.2%)
  • Ignition28 (6.5%)
  • Engine Exhaust20 (4.6%)
  • Engine Indicating19 (4.4%)
  • Engine Oil19 (4.4%)
  • Starting5 (1.2%)
  • Engine Controls2 (0.5%)
  • Power Plant1 (0.2%)
  • Other1 (0.2%)
Engine variants
VariantReportsYears
LEAP-1B2452018–2026
LEAP-1A1872018–2026

Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).

Airworthiness directives

  • 2025-0171R2: Engine - High Pressure Turbine Rotor Stage 1 Blade - Inspection (2026-07-03)
  • 2026-0049: Engine - Full Authority Digital Electronic Control Software - Replacement (2026-03-11)
  • 2025-0246: Engine - Non-Synchronous Vibration During Engine Operation - Monitoring / Replacement (2025-10-30)
  • 2025-0243: Engine - Forward Outer Seal, High-Pressure Compressor Stages 6-10 Compressor Rotor Spools and High-Pressure Turbine Rotor Stage 1 Disks - Replacement (2025-10-28)
  • 2025-0171R1: Engine - High Pressure Turbine Rotor Stage 1 Blade - Inspection (2025-08-15)
  • 2025-11340: Airworthiness Directives; CFM International, S.A. Engines (2025-06-20)
  • 2025-03459: Airworthiness Directives; CFM International, S.A. Engines (2025-03-04)
  • 2025-02204: Airworthiness Directives; CFM International, S.A. Engines (2025-02-04)
  • 2025-0007: Engine - High-Pressure Turbine - Rotor Interstage Seal - Replacement (2025-01-09)
  • 2025-00207: Airworthiness Directives; CFM International, S.A. Engines (2025-01-08)
  • 2025-0003: Engine - Low Pressure Turbine - Stage 4 and Stage 5 Disks - Replacement (2025-01-07)
  • 2024-0175: [Correction] Engine - Fuel Nozzle - Replacement (2024-11-28)
  • 2024-0227: Engine - High-Pressure Stage 2 Compressor Stator Seal and Rotor Seal Teeth - In-Shop Inspection (2024-11-27)
  • 2024-0226: Engine - High-Pressure Compressor Stages 6-10 Spools and High-Pressure Turbine Rotor Stage 1 Disks - Replacement (2024-11-26)
  • 2024-0225: Engine - Forward Outer Seal, High-Pressure Compressor Stages 6-10 Compressor Rotor Spools and High-Pressure Turbine Rotor Stage 1 Disks - Replacement (2024-11-26)
  • 2024-0093: Engine - Non-Synchronous Vibration During Engine Operation - Monitoring (2024-04-22)
  • 2024-0026: Engine - High Pressure Turbine - Rotor Interstage Seal - Replacement (2024-01-24)
  • 2023-27092: Airworthiness Directives; CFM International, S.A. Engines (2023-12-11)
  • 2023-0109: Engine - High Pressure Compressor Stages 6-10 Spools and High Pressure Turbine Rotor Stage 1 Disks - Replacement (2023-05-26)
  • 2023-0108: Engine - Forward Outer Seal, High Pressure Compressor Stages 6-10 Compressor Rotor Spools and High Pressure Turbine Rotor Stage 1 Disks - Replacement (2023-05-26)
  • 2023-10763: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2023-05-19)
  • 2023-09737: Airworthiness Directives; CFM International, S.A. Engines (2023-05-09)
  • 2022-0215: Engine - Bearing Spring Finger Housing - Inspection (2022-10-25)
  • 2022-19946: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2022-09-15)
  • 2022-18923: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2022-09-01)
  • 2022-15391: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2022-07-20)
  • 2022-0009R1: Engine - High Pressure Turbine Rotor Stage 1 Blade - Inspection (2022-07-19)
  • 2022-0139: Engine - High Pressure Turbine Nozzle Assembly and Stator Stationary Seal - Inspection (2022-07-07)
  • 2022-14212: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2022-07-01)
  • 2022-0113: Engine - Stages 6-10 Compressor Rotor Spools and High Pressure Turbine Rotor Stage 1 Disks - Replacement (2022-06-17)
  • 2022-11926: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2022-06-03)
  • R1-2022-10447: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2022-05-23)
  • 2022-0074: Engine - Transfer Gearbox Module Scavenge Screens - Inspection / Modification (2022-04-27)
  • 2022-0071: Time Limits / Maintenance Checks - Airworthiness Limitations Section - Amendment (2022-04-26)
  • 2022-0009: Engine - High Pressure Turbine Rotor Stage 1 Blade and Stator Stage 1 Nozzles - Inspection (2022-01-19)
  • 2022-0007: Time Limits / Maintenance Checks - Airworthiness Limitations Section - Implementation (2022-01-19)
  • 2021-12137: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2021-06-10)
  • 2021-09507: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2021-05-04)
  • 2021-0118: Engine Fuel and Control - Pressure Sub-System Units - Operational Check (2021-04-28)
  • 2021-0097: Engine - High Pressure Turbine Case - Replacement (2021-03-31)
  • 2020-27985: Airworthiness Directives; CFM International, S.A. Turbofan Engines (2020-12-21)
  • 2020-0135: Engine - High Pressure Turbine Rotor Stage 2 Disc - Inspection (2020-06-15)
  • 2020-04997: Airworthiness Directives; CFM International, S.A., Turbofan Engines (2020-03-12)
  • 2020-0055: Time Limits / Maintenance Checks - Airworthiness Limitations Section - Implementation (2020-03-11)
  • 2019-0137: Engine - Transfer Gearbox Module Scavenge Screens - Inspection (2019-06-12)
  • 2018-26611: Airworthiness Directives; CFM International S.A. Turbofan Engines (2018-12-11)
  • 2018-0251: Engine - Electronic Engine Control Software - Replacement (2018-11-20)
  • 2018-0239: Engine - High Pressure Turbine Case - Replacement (2018-11-07)
  • 2018-0216: Engine - Full Authority Digital Electronic Control Software - Replacement (2018-10-08)
  • 2017-25719: Airworthiness Directives; CFM International S.A. Turbofan Engines (2017-11-30)
  • 2017-0230R1: Engine - High Pressure Turbine Rotor Stage 2 Disk - Replacement (2017-11-24)

Occurrences naming this engine

0 occurrences, 0 fatal, 0 fatalities.

Engine-failure occurrences on aircraft using this engine

92 occurrences, 5 fatal, 321 fatalities.

These occurrences are engine-failure events on aircraft families that can be fitted with this engine; the engine type of each specific aircraft is not confirmed. Do not read this list as a record for this engine.

Applications