Observation Window
No failure report names the observation window. 7 FAA approvals let 6 companies make a replacement observation window, Perkins Aircraft Services INC. holding the most (2).
Approved replacement parts 7 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a observation window and sell it as an approved part for the models named. These are the companies holding such approvals for a observation window:
For these models most: Sikorsky S-61 (6), Cessna U206 Stationair (1), Cessna TU206 (1), Cessna T206 Turbo Stationair (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Dv Aviation, INC. | Observation Window Kit 901-1011-1 | Modification Article | Textron Aviation Inc. 206, U206, U206A | 2023-06-08 | current |
| Nordam Transparency Div | Upper Observation Window 61-245-1, -2 | Sikorsky S6120-61245-1, -2 | Sikorsky S61 L, N | 1999-10-12 | current |
| Nordam-Texas | Upper Observation Window 61-245-1, -2 | Sikorsky S6120-61245-1, -2 | Sikorsky S-61 L, N, NM | 1997-02-12 | current |
| M & N Aerospace | Upper Observation Window 61-245-1, -2 | Sikorsky S6120-61245-1, -2 | Sikorsky S-61L, N | 1993-09-09 | current |
| Ten Cate Aerospace INC | Upper Observation Window 61-245-1, -2 | Sikorsky S6120-61245-1, -2 | Sikorsky S-61L, N | 1993-05-16 | current |
| Perkins Aircraft Services INC. | Upper Observation Window Left and Right Hand 61-245 | Skorsky S6120-61245 | Sikorsky S-61L, S61N | 1990-08-15 | current |
| Perkins Aircraft Services INC. | Lower Observation Window Left and Right Hand 61-246 | Skorsky S6120-61246 | Sikorsky S-61L, S61N | 1990-08-15 | 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.