What Is a CFM56 LLP?
Life Limited Parts are engine parts with an approved finite life that must be removed from service at or before the applicable life limit.
| Primary Basis | Approved engine maintenance / life-management data |
|---|---|
| Typical Tracking | Cycles and/or other approved life parameters |
| Commercial Focus | Remaining life, configuration, records and replacement timing |
| Critical Requirement | Full traceability and applicability verification |
CFM56 LLP Programs
CFM Gate supports LLP sourcing across the main CFM56 commercial engine families.
| Program | Primary Aircraft Family |
|---|---|
| CFM56-7B | Boeing 737 Next-Generation |
| CFM56-5B | Airbus A320ceo family |
| CFM56-5C | Airbus A340-200/-300 |
| CFM56-3B / -3C | Boeing 737 Classic |
LLP Technical Groups
Actual LLP lists are engine-family and configuration specific, but sourcing commonly centers on the rotating modules below.
| Fan / LPC | Fan disks, shafts, booster spools and related rotating hardware |
|---|---|
| HPC | Compressor shafts, disks and stage spools |
| HPT | Turbine disks, shafts and applicable rotating structures |
| LPT | Low-pressure turbine disks, shafts and supports |
Representative LLP P/N Reference
| Family | Example P/N | Description |
|---|---|---|
| 7B | 340-000-420-0 | Fan Disk |
| 7B / 5B | 1386M56P03 | HPC Front Shaft |
| 5B | 338-001-504-0 | Stage 1 Fan Disk |
| 5B | 338-001-906-0 | Booster Spool |
| 5C | 337-005-407-0 | Fan Disk |
| 3B / 3C | 335-014-511-0 | Fan Disk |
| 3B / 3C | 1275M37P02 | HPC Front Shaft |
Examples only. Never infer applicability or life limit from this table. Verify P/N, dash number, configuration and approved engine records before use.
Life & Traceability Review
| Part identity | Verify exact P/N, serial number and configuration. |
|---|---|
| Life status | Confirm accumulated and remaining approved life. |
| Records | Review back-to-birth / life records and supporting release documentation as applicable. |
| AD / SB status | Check current mandatory and configuration-relevant requirements. |
| Transaction check | Match remaining life to planned workscope and commercial objective. |
Shop-Visit & Budget Planning
| Removal timing | LLP remaining cycles can materially affect engine removal timing. |
|---|---|
| Workscope | Coordinate LLP replacement with module access and planned maintenance scope. |
| Budget | Plan part cost, exchange/repairable alternatives where applicable, logistics and shop capacity. |
| Engine value | Green time and LLP status directly influence engine commercial value. |
There is no single life-limit number applicable across an entire engine family; limits are P/N and configuration specific.
Why CFM Gate for LLP Sourcing?
CFM Gate can support targeted LLP sourcing for engine shop visits, spare-engine planning and transaction support, with emphasis on correct P/N matching, documentation review, traceability and commercially useful remaining life.
Need a CFM56 LLP or Life-Remaining Requirement?
Send the engine family, P/N, quantity and required remaining life or workscope target.