Low Pressure
No failure report names the low pressure. 6 FAA approvals let 5 companies make a replacement low pressure, Chromalloy Nevada (Cnv) holding the most (2).
Approved replacement parts 6 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a low pressure and sell it as an approved part for the models named. These are the companies holding such approvals for a low pressure:
For these models most: Piper PA-60 Aerostar (1), Learjet 60 (1), British Aerospace BAE 146 (1), Bombardier CL-600 Challenger and CRJ (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Chromalloy Nevada (Cnv) | Low Pressure Turbine Vane (Nozzle), Stage 1 CN340-256-354-0 | 340-256-354-0 | CFM International CFM56-5B1/P, CFM56-5B1/2P, CFM56-5B1/3 | 2025-04-22 | current |
| Chromalloy Nevada (Cnv) | Low Pressure Turbine Vane (Nozzle), Stage 1 CN340-256-254-0 | 340-256-254-0 | CFM International CFM56-5B1/P, CFM56-5B1/2P, CFM56-5B1/3 | 2025-04-22 | current |
| Custom Control Sensors, LLC | Low Pressure Switch 7G1140 | 601R60014-5 | Bombardier, Inc. CL600-2B19 (Regional Jet Series 100) | 2000-10-26 | current |
| Machen INC | Low Pressure Switch 74-10010-( ) | Modification Parts | Aerostar Aircraft PA-60-600, -601, -601P & -602P | 1999-02-18 | current |
| F H INC | Low Pressure Filter Assembly 3551 H1 | British Aerospace Regional Aircraft 3551 H1 | BAE Systems Operations) Limited (Avro 146-RJ70A,... | 1998-07-15 | current |
| Lear Romec Division Crane CO | Low Pressure Flared Tube fitting RD11373-2 | Learjet RD11373-2 (Learjet uses Lear Romec ) | Learjet 60 | 1994-05-03 | 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.