Seal Disc
No failure report names the seal disc. 10 FAA approvals let 2 companies make a replacement seal disc, Ada Manufacturing holding the most (7).
Approved replacement parts 10 parts manufacturer approvals
A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a seal disc and sell it as an approved part for the models named. These are the companies holding such approvals for a seal disc:
For these models most: Boeing 737 (3), Beechcraft H-18 (1), Beechcraft G18 (1), Beechcraft E18 (1), Beechcraft D18 (1), Beechcraft C-45 (1), Air Tractor Inc AT-402 (1).
| Maker | Part | Replaces | Fits | Granted | Status |
|---|---|---|---|---|---|
| Turbine Kinetics INC, A Heico Aerospace Company | Seal Disc 116A8505-2KT | Hartwell P/N: 116A8505-2 | The Boeing Company 737-9 | 2021-06-03 | current |
| Turbine Kinetics INC, A Heico Aerospace Company | Seal Disc 116A8505-2KT | Hartwell P/N 116A8505-2 | The Boeing Company 737-8 | 2018-06-10 | current |
| Turbine Kinetics INC, A Heico Aerospace Company | Seal Disc 116A8505-2KT | Hartwell P/N 116A8505-2 | Boeing 737-700 Series, 737-800 Series,... | 2016-10-16 | current |
| Ada Manufacturing | Seal Disc Assy R-600-175B-M | R-600-175B | Warner Super Scarab 165) Air Tractor... | 2013-05-27 | current |
| Ada Manufacturing | Seal Disc Assy. R-400-99-M | R-400-99 | Beech D-18, E-18, C-45 | 2013-05-27 | current |
| Ada Manufacturing | Seal Disc Assy. R-400-99-M | R-400-99 | Air Tractor AT-402, -502, -602 | 2013-05-27 | current |
| Ada Manufacturing | Seal Disc Assy. R-400-99-M | R-400-99 | Continental W670-6N) Jacobs (R-755A2, L-4, R-755B2 | 2013-05-27 | current |
| Ada Manufacturing | Seal Disc Assy. R-400-99-M | R-400-99 | Ranger 6-440-C2 (Military R-440-1),... | 2013-05-27 | current |
| Ada Manufacturing | Seal Disc Assy R-400-99-M | R-400-99 | Pratt & Whitney Wasp S1H2, S3H2, Wasp Jr. SB | 2013-05-27 | current |
| Ada Manufacturing | Seal Disc Assy. R-600-175B-M | R-600-175B | Pratt & Whitney Wasp Jr. SB, Military Models R-985, R-1340 | 2013-05-27 | 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.