Lpt Stage
No failure report names the lpt stage. 7 FAA approvals let 2 companies make a replacement lpt stage, Chromalloy Nevada holding the most (6).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a lpt stage and sell it as an approved part for the models named. These are the companies holding such approvals for a lpt stage:
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Chromalloy Nevada (Cnv) | LPT Stage 1 Turbine Vane CN340-256-352-0 | 340-256-352-0 | CFM INTERNATIONAL CFM56-7B20E, CFM56-7B22E, CFM56-7B22E/B1 | 2025-10-27 | current |
| Chromalloy Nevada | LPT Stage 1 Turbine Vane CN340-256-252-0 | 340-256-252-0 | CFM International S.A. CFM56-7B20, CFM56-7B22, CFM56-7B22/3B1 | 2021-02-02 | current |
| Chromalloy Nevada | LPT STAGE 1 NGV Segment Assembly CN338-108-708-0-8 | 338-108-708-0 | CFM International CFM56-5B/P, -7B Series | 2009-02-10 | current |
| Chromalloy Nevada | LPT STAGE 1 NGV Segment Assembly CN338-108-608-0-8 | 338-108-608-0 | CFM International CFM56-5B/P, -7B Series | 2009-02-10 | current |
| Chromalloy Nevada | LPT Stage 3 Blade CN798403-18 | 798403 | Pratt & Whitney JT8D-217C, -219 | 2006-11-15 | current |
| Chromalloy Nevada | LPT Stage 2 Blade CN800002-17 | 800002 | Pratt & Whitney JT8D-217C, -219 | 2006-11-15 | current |
| Chromalloy Nevada | LPT Stage 4 Blade CN822504-18 | 822504 | Pratt & Whitney JT8D-217C, -219 | 2006-08-29 | current |
Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.