CFM56 Engine Wiki Engine Details and Support
Aircraft Applications
CFM56-3: Boeing 737 Classic
CFM56-5: Airbus A320ceo, A319, A321
CFM56-7: Boeing 737NG family
Competes with IAE V2500 (A320ceo)
Notable Design Features
High durability and proven low maintenance cost
CFM56-7B known for its double-annular combustor variant (eco- friendly)
Broad MRO capability across global network
Maintenance & Shop Visit Considerations
Mature aftermarket with accessible parts
High-volume SV experience leads to cost-effective overhauls
LLPs often tied to thrust rating and aircraft mission profile
CFM56-3 starting to phase out; -5 and -7 still active
Market Context
Thousands in service and spares pool
Strong demand in short-haul leasing sector
Ideal for teardowns and part-outs (especially -5B/-7B)
Technical Records & Due Diligence Considerations
Watch for full SB compliance, especially on older -3C1s
Modular LLP stack often split between modules — clear traceability needed
Life limits and de-pairing are critical in acquisitions
Look for on-condition vs hard-time items
