Seal Flow
No failure report names the seal flow. 3 FAA approvals let 2 companies make a replacement seal flow, John Crane Belfab holding the most (2).
Approved replacement parts 3 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a seal flow and sell it as an approved part for the models named. These are the companies holding such approvals for a seal flow:
For these models most: Boeing 747 (2).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Wencor LLC | Seal Flow Plate 38567-1005WE | 38567-1005 | GENERAL ELECTRIC COMPANY CF34-3A1 & CF34-3B1 | 2010-10-28 | current |
| John Crane Belfab | Seal Assembly Flow Control, Pre-Cooler Exhaust 00-317501 | 60B90114-3 | Boeing 747 | 1996-02-19 | current |
| John Crane Belfab | Seal Assembly Flow Control, Pre-Cooler Exhaust 00-500003 | 60B90114-2 | Boeing 747 | 1996-02-19 | 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.