Muffle
No failure report names the muffle. 10 FAA approvals let 4 companies make a replacement muffle, Seal Dynamics INC holding the most (5).
Approved replacement parts 10 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a muffle and sell it as an approved part for the models named. These are the companies holding such approvals for a muffle:
For these models most: Airbus A321 (6), Airbus A320 (6), Airbus A319 (3), Boeing 747 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Seal Dynamics INC | Muffle 9087A0003-02SD | 9087A0003-02 | Airbus SAS A319-153N, A320-272N, A321-271N | 2026-04-22 | current |
| Seal Dynamics INC | Muffle 9087A0003-02SD | 9087A0003-02 | Airbus SAS A321-271NX | 2026-02-06 | current |
| Wencor, LLC | Muffle 9087A0003-02WE | 9087A0003-02 | Airbus SAS A320-253N, A321-251N, A321-252NX | 2025-10-29 | current |
| Wencor, LLC | Muffle 9087A0003-02WE | 9087A0003-02 | Airbus SAS A319 Model -153N, A321 Model -251NX,... | 2022-10-25 | current |
| Seal Dynamics INC | Muffle 9087A0003-02SD | 9087A0003-02 | Airbus SAS A320 Model -216, A320 Model -271N | 2022-08-08 | current |
| Wencor LLC | Muffle 9087A0003-02WE | 9087A0003-02 | Airbus A320 SeriesA320 Model -251NA320... | 2021-04-10 | current |
| Seal Dynamics INC | Muffle 9087A0003-02SD | Liebherr P/N 9087A0003-02 | Airbus SAS A318 Model -111, A318 Model -112,... | 2020-03-15 | current |
| Wencor LLC | Muffle 9087A0003-02WE | 9087A0003-02 | Airbus A318 Series A318 Model -111 A318... | 2015-08-30 | current |
| Seal Dynamics INC | Muffle 9087A0003-02SD | Liebherr P/N 9087A0003-02 | Airbus A319 Model -111, A319 Model -112,... | 2013-08-01 | current |
| Weber Aircraft INC | Muffle 41101 | Boeing 41101 | Boeing 747 | 1994-03-07 | 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.