Airworthiness Directive · Amendment 39-22714 · Engine
CFM International, S.A. Engines
This AD applies to the following CFM International, S.A. Model engines:
(1) CFM56-2, CFM56-2A, CFM56-2B, CFM56-3, CFM56-3B, and CFM56-3C engines;
(2) CFM56-5, CFM56-5-A1/F, CFM56-5A3, CFM56-5A4, CFM56-5A4/F, CFM56-5A5, and CFM56-5A5/F engines;
(3) CFM56-5B1, CFM56-5B1/2P, CFM56-5B1/3, CFM56-5B1/P, CFM56-5B2, CFM56-5B2/2P, CFM56-5B2/3, CFM56-5B2/P, CFM56-5B3/2P, CFM56-5B3/2P1, CFM56-5B3/3, CFM56-5B3/3B1, CFM56-5B3/P, CFM56-5B3/P1, CFM56-5B4, CFM56-5B4/2P, CFM56-5B4/2P1, CFM56-5B4/3, CFM56-5B4/3B1, CFM56-5B4/P, CFM56-5B4/P1, CFM56-5B5, CFM56-5B5/3, CFM56-5B5/P, CFM56-5B6, CFM56-5B6/2P, CFM56-5B6/3, CFM56-5B6/P, CFM56-5B7, CFM56-5B7/3, CFM56-5B7/P, CFM56-5B8/3, CFM56-5B8/P, CFM56-5B9/2P, CFM56-5B9/3, and CFM56-5B9/P engines;
(4) CFM56-5C2, CFM56-5C2/4, CFM56-5C2/F, CFM56-5C2/F4, CFM56-5C2/G, CFM56-5C2/G4, CFM56-5C2/P, CFM56-5C3/F, CFM56-5C3/F4, CFM56-5C3/G, CFM56-5C3/G4, CFM56-5C3/P, CFM56- 5C4, CFM56-5C4/1, CFM56-5C4/1P, and CFM56-5C4/P engines; and
(5) CFM56-7B20, CFM56-7B20/2, CFM56-7B20/3, CFM56-7B20E, CFM56-7B22, CFM56-7B22/2, CFM56-7B22/3, CFM56-7B22/3B1, CFM56-7B22/B1, CFM56-7B22E, CFM56-7B22E/B1, CFM56-7B24, CFM56-7B24/2, CFM56-7B24/3, CFM56-7B24/3B1, CFM56-7B24/B1, CFM56-7B24E, CFM56-7B24E/B1, CFM56-7B26, CFM56-7B26/2, CFM56-7B26/3, CFM56-7B26/3B1, CFM56-7B26/3B2, CFM56-7B26/3B2F, CFM56-7B26/3F, CFM56-7B26/B1, CFM56-7B26/B2, CFM56-7B26E, CFM56-7B26E/B1, CFM56-7B26E/B2, CFM56-7B26E/B2F, CFM56-7B26E/F, CFM56-7B27, CFM56-7B27/2, CFM56-7B27/3, CFM56-7B27/3B1, CFM56-7B27/3B1F, CFM56-7B27/3B3, CFM56-7B27/3F, CFM56-7B27/B1, CFM56-7B27/B3, CFM56-7B27A, CFM56-7B27A/3, CFM56-7B27AE, CFM56-7B27E, CFM56-7B27E/B1, CFM56-7B27E/B1F, and CFM56-7B27E/B3 engines.
The FAA is adopting a new airworthiness directive (AD) for certain CFM International, S.A. (CFM) Model CFM56-2, CFM56-3, CFM56-5, CFM56-5B, CFM56-5C, and CFM56-7B engines. This AD was prompted by a report of electrical arcing on certain life-limited critical parts. This AD requires replacing certain compressor discharge pressure (CDP) seals, high-pressure compressor (HPC) stage 3 disks, and high-pressure turbine (HPT) rear shafts. This AD also prohibits installation of certain CDP seals, HPC stage 3 disks, and HPT rear shafts on any engine, and prohibits installation of any engine with certain CDP seals, HPC stage 3 disks, and HPT rear shafts installed on any airplane. The FAA is issuing this AD to address the unsafe condition on these products.
Before further flight after the effective date of this AD, remove from service each CDP seal, HPC stage 3 disk, and HPT rear shaft having a part number (P/N) and serial number (S/N) specified in Table 1 to paragraph (g) of this AD and replace with a part eligible for installation.
| S/N | P/N | HPC stage 3 disk | S/N | P/N | HPT rear shaft | S/N | P/N |
|---|---|---|---|---|---|---|---|
| 779879 | CFM56-5B | GFF5HR7H | 2116M25P01 | XAEH4524 | 1590M59P01 | TMT3SB56 | 1864M90P05 |
| 575151 | CFM56-5B | GFF5J2R0 | 1523M35P01 | XAEW3896 | 1590M59P01 | TMTA6584 | 1864M90P04 |
| 643313 | CFM56-5B | GFF5LL3P | 2116M25P01 | XAE6377U | 2116M23P01 | TMT1RJ6T | 1864M90P04 |
| 643308 | CFM56-5B | GFF5LL5R | 2116M25P01 | XAE6416U | 2116M23P01 | TMT1T7KF | 1864M90P04 |
| 643443 | CFM56-5B | GFF5LN9K | 2116M25P01 | XAE6576U | 2116M23P01 | TMT1UCL8 | 1864M90P04 |
| 643384 | CFM56-5B | GFF5LN29 | 2116M25P01 | XAE6749U | 2116M23P01 | TMT1UDJN | 1864M90P04 |
| 643383 | CFM56-5B | GFF5LN7C | 2116M25P01 | XAE6883U | 2116M23P01 | TMT1UTL2 | 1864M90P04 |
| 960147 | CFM56-7B | GFF5LC8G | 2116M25P01 | XAE6329U | 2116M23P01 | TMT1LPT5 | 1864M90P04 |
| 890800 | CFM56-7B | GFF5GL4T | 2116M25P01 | XAEY9605 | 2116M23P01 | TMTA3602 | 1864M90P04 |
| 960113 | CFM56-7B | GFF5LLHK | 2116M25P01 | XAE6496U | 2116M23P01 | TMT1RJ6P | 1864M90P04 |
| 960105 | CFM56-7B | GFF5KTW1 | 2116M25P01 | XAE6196U | 2116M23P01 | TMT1PM2N | 1864M90P04 |
| 803767 | CFM56-7B | GFF5LLJE | 2116M25P01 | XAE6497U | 2116M23P01 | TMT1PRR6 | 1864M90P04 |
| 962116 | CFM56-7B | GFF5LM2F | 2116M25P01 | XAE6482U | 2116M23P01 | TMT1PRR4 | 1864M90P04 |
| 960999 | CFM56-7B | GFF5LLK6 | 2116M25P01 | XAE6502U | 2116M23P01 | TMT1PN56 | 1864M90P04 |
| 961787 | CFM56-7B | GFF5LL4A | 2116M25P01 | XAE7292U | 2116M23P01 | TMT1U29H | 1864M90P04 |
| 962504 | CFM56-7B | GFF5LLH4 | 2116M25P01 | XAE7324U | 2116M23P01 | TMT1LPJ6 | 1864M90P04 |
| 962491 | CFM56-7B | GFF5LPKJ | 2116M25P01 | XAE7116U | 2116M23P01 | TMT1RJ6E | 1864M90P04 |
| 575348 | CFM56-5B | GFF5LH68 | 2116M25P01 | XAE6017U | 2116M23P01 | TMT1NLFE | 1864M90P04 |
| 575243 | CFM56-5B | GFF5KN5K | 2116M25P01 | XAE5290U | 2116M23P01 | TMT1JHJ7 | 1864M90P04 |
| 577604 | CFM56-5B | GFF5L936 | 2116M25P01 | XAE4312U | 2116M23P01 | TMT1JKK8 | 1864M90P04 |
| 577255 | CFM56-5B | GFF5ECKK | 1523M35P01 | XAEG0763 | 1590M59P01 | TMT1M7UD | 1864M90P04 |
| 645551 | CFM56-5B | GFF5LH4H | 2116M25P01 | XAE5738U | 2116M23P01 | TMT1NLF0 | 1864M90P04 |
| 779544 | CFM56-5B | GFF5ELT0 | 1523M35P01 | XAEW3361 | 1590M59P01 | TMT3SD14 | 1864M90P05 |
| 575840 | CFM56-5B | GFF5J4R8 | 1523M35P01 | N/A | N/A | TMTD4155 | 1864M90P04 |
| 960395 | CFM56-7B | GFF5G2WC | 2116M25P01 | XAEV5927 | 2116M23P01 | TMTA1872 | 1864M90P04 |
| 575806 | CFM56-5B | GFF5LLHT | 2116M25P01 | XAEW3261 | 1590M59P01 | TMTD1698 | 1864M90P04 |
| 699126 | CFM56-5B | GFF5DNJG | 2116M25P01 | XAER4768 | 2116M23P01 | TMTA5963 | 1864M90P04 |
| 699277 | CFM56-5B | GFF5GWRJ | 2116M25P01 | XAEBS962 | 2116M23P01 | TMT4E107 | 1864M90P04 |
| 697355 | CFM56-5B | GFF59NHM | 1523M35P01 | GWN04DF4 | 1590M59P01 | TMT3SA87 | 1864M90P05 |
| 577182 | CFM56-5B | GFF5DG9W | 1523M35P01 | XAEH5166 | 1590M59P01 | TMT3S111 | 1864M90P05 |
| 779990 | CFM56-5B | GFF5K300 | 2116M25P01 | N/A | N/A | N/A | N/A |
| 697483 | CFM56-5B | GFF5LGT2 | 2116M25P01 | XAE5993U | 2116M23P01 | TMT1MMNL | 1864M90P04 |
| 577181 | CFM56-5B | GFF5J4DH | 2116M25P01 | XAEGD205 | 2116M23P01 | TMTD1836 | 1864M90P04 |
| 569701 | CFM56-5B | GFF5HTFW | 2116M25P01 | XAEDU465 | 2116M23P01 | TMTA8863 | 1864M90P04 |
| 569702 | CFM56-5B | GFF5HTWC | 2116M25P01 | XAECR455 | 2116M23P01 | TMT1H3E3 | 1864M90P04 |
| 802219 | CFM56-7B | GFF5LH8R | 2116M25P01 | XAE6050U | 2116M23P01 | TMT1MHCE | 1864M90P04 |
| 643567 | CFM56-5B | GFF5LMWK | 2116M25P01 | XAE6981U | 2116M23P01 | TMT1U28M | 1864M90P04 |
| 573567 | CFM56-5B | GFF5JARC | 2116M25P01 | N/A | N/A | N/A | N/A |
| 643851 | CFM56-5B | GFF5LN01 | 2116M25P01 | XAE6899U | 2116M23P01 | TMT1U0J7 | 1864M90P04 |
| 699992 | CFM56-5B | N/A | N/A | XAEHP389 | 2116M23P01 | N/A | N/A |
| 645978 | CFM56-5B | GFF5KN5N | 2116M25P01 | XAE5574U | 2116M23P01 | TMT1JKJJ | 1864M90P04 |
| 643446 | CFM56-5B | GFF5L8K8 | 2116M25P01 | XAE5761U | 2116M23P01 | TMT1M7UJ | 1864M90P04 |
| 643447 | CFM56-5B | GFF5L9PN | 2116M25P01 | XAE5757U | 2116M23P01 | TMT1MGNL | 1864M90P04 |
| 699642 | CFM56-5B | GFF5L9PR | 2116M25P01 | XAE6316U | 2116M23P01 | TMT1MNA8 | 1864M90P04 |
| 643470 | CFM56-5B | GFF5LKEP | 2116M25P01 | XAE6406U | 2116M23P01 | TMT1RJ7P | 1864M90P04 |
| 699283 | CFM56-5B | GFF5L9P9 | 2116M25P01 | XAE5741U | 2116M23P01 | TMT1JNTP | 1864M90P04 |
| 643730 | CFM56-5B | GFF5LL3W | 2116M25P01 | XAE6507U | 2116M23P01 | TMT1PN4H | 1864M90P04 |
| 699279 | CFM56-5B | GFF5LE8P | 2116M25P01 | XAE6282U | 2116M23P01 | TMT1L01A | 1864M90P04 |
| 699644 | CFM56-5B | GFF5LE41 | 2116M25P01 | XAE6311U | 2116M23P01 | TMT1PG4N | 1864M90P04 |
| 643479 | CFM56-5B | GFF5LFDA | 2116M25P01 | XAE6892U | 2116M23P01 | TMT1JLU6 | 1864M90P04 |
| 643635 | CFM56-5B | GFF5LN4R | 2116M25P01 | XAE6811U | 2116M23P01 | TMT1U0HR | 1864M90P04 |
| 643633 | CFM56-5B | GFF5LMJ9 | 2116M25P01 | XAE6568U | 2116M23P01 | TMT1JKFH | 1864M90P04 |
| 699867 | CFM56-5B | GFF5LN9E | 2116M25P01 | XAE6932U | 2116M23P01 | TMT1UNLM | 1864M90P04 |
| 643267 | CFM56-5B | GFF5MH2 | 2116M25P01 | XAE7182U | 2116M23P01 | TMT1U296 | 1864M90P04 |
| 779533 | CFM56-5B | GFF5J6MH | 2116M25P01 | XAEGD645 | 2116M23P01 | TMTD2505 | 1864M90P04 |
| 643444 | CFM56-5B | GFF5LN7D | 2116M25P01 | N/A | N/A | TMT1U9RJ | 1864M90P04 |
| 699887 | CFM56-5B | GFF5LKGP | 2116M25P01 | XAE6818U | 2116M23P01 | TMT1U0HU | 1864M90P04 |
Note 1 to paragraph (g): Table 1 to paragraph (g) of this AD includes, for information only, the engine serial numbers (engine S/N) and engine models on which the affected parts were installed.
(1) After the effective date of this AD, do not install any CDP seal, HPC stage 3 disk, or HPT rear shaft having a P/N and S/N specified in Table 1 to paragraph (g) of this AD on any engine.
(2) After the effective date of this AD, do not install any engine having a CDP seal, HPC stage 3 disk, or HPT rear shaft having a P/N and S/N specified in Table 1 to paragraph (g) of this AD installed on any airplane.
For the purposes of this AD, a part eligible for installation is any CDP seal, HPC stage 3 disk, or HPT rear shaft that does not have a P/N and S/N specified in Table 1 to paragraph (g) 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.
