Airworthiness Directive · Amendment 39-15912 · CFM International S.A. Model CFM56 Turbofan Engines
CFM International S.A. Model CFM56 Turbofan Engines
This AD applies to CFM International S.A. CFM56-2, CFM56-3, CFM56-5A, CFM56-5B, CFM56-5C, and CFM56-7B series turbofan engines with a high-pressure compressor (HPC) 4-9 spool that has a part number (P/N) and serial number (SN) specified in Table 1 of this AD, installed. These engines are installed on, but not limited to, Airbus A319, A320, and A340 airplanes and Boeing 737 airplanes.
| HPC 4-9 spool P/N | HPC 4-9 spool SN |
|---|---|
| 9513M93G08 | MPON1641 |
| 1590M29G01 | GWN0087D |
| 1590M29G01 | GWN00MG2 |
| 1590M29G01 | GWN011LG |
| 1590M29G01 | GWN01285 |
| 1590M29G01 | GWN021JC |
| 1590M29G01 | GWNFY923 |
| 1590M29G01 | GWNFY924 |
| 1590M29G01 | GWNPA756 |
| 1590M29G01 | GWNPG015 |
| 1590M29G01 | GWNWC515 |
| 1590M29G01 | GWNWR523 |
| 1590M29G01 | GWNWT631 |
| 1590M29G01 | GWNYC495 |
| 1588M89G03 | GWN03K1R |
| 1588M89G03 | GWN03N61 |
| 1588M89G03 | GWN03N6C |
| 1588M89G03 | GWN040L9 |
| 1588M89G03 | GWN0468N |
| 1588M89G03 | GWN05AMO |
| 1277M97G02 | GWNE1298 |
| 1277M97G02 | GWNE1564 |
| 1277M97G02 | GWNJ7891 |
| 1277M97G02 | GWNT4187 |
| 9513M93G11 | GWNB3373 |
| 1358M94G01 | GWNU0169 |
The FAA is adopting a new airworthiness directive (AD) for CFM International S.A. CFM56-2, CFM56-3, CFM56-5A, CFM56-5B, CFM56-5C, and CFM56-7B series turbofan engines with certain part number (P/N) and serial number (SN) high-pressure compressor (HPC) 4-9 spools installed. This AD requires removing certain HPC 4-9 spools listed by P/N and SN in this AD. This AD results from reports of certain HPC 4-9 spools that Propulsion Technology LLC (PTLLC) improperly repaired and returned to service. We are issuing this AD to prevent cracking of the HPC 4-9 spool, which could result in possible uncontained failure of the spool and damage to the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
Remove HPC 4-9 spools from service that have a P/N and S/N listed in Table 1 of this AD before accumulating 8,900 cycles-since-repair at PTLLC or within 1,100 cycles from the effective date of this AD, which ever occurs later.
After the effective date of this AD, do not install any engine with an HPC 4-9 spool that has a P/N and SN specified in Table 1 of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
