Degree Elbow
No failure report names the degree elbow. 5 FAA approvals let 2 companies make a replacement degree elbow, Industrial Tube Corporation holding the most (4).
Approved replacement parts 5 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a degree elbow and sell it as an approved part for the models named. These are the companies holding such approvals for a degree elbow:
For these models most: Boeing 757 (5), Boeing 747 (5), Boeing 737 (5), Boeing 727 (5), Boeing 707 (5).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Industrial Tube Corporation | 135 Degree Elbow IT-4354-456 | 69-27191-456 | The Boeing Company 707, 727, 737 | 2019-10-06 | current |
| Industrial Tube Corporation | 135 Degree Elbow IT-4354-458 | 69-27191-458 | The Boeing Company 707, 727, 737 | 2019-10-06 | current |
| Industrial Tube Corporation | 135 Degree Elbow IT-4354-458 | 69-27191-458 | Boeing 707, 727, 737 | 2018-07-10 | current |
| Industrial Tube Corporation | 135 Degree Elbow IT-4354-456 | 69-27191-456 | Boeing 707, 727, 737 | 2018-07-10 | current |
| Industrial Tube CORP | 135 Degree Elbow IT-4354-( ) | The Boeing Co. 69-27191-( ) | Boeing 707, 727, 737 | 1996-03-03 | 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.