SA527NE
Installation of Tetrafluror seal P/N TF888S080686-4B with supporting backup spring SD870106-1. Held by Wsk, INC. Last revised October 12, 1994. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.; Dornier-Werke G.m.b.H.
- Models
- Do 228-201, Do 228-202, Do 228-101, Do 228-200
- Type certificates
- A16EU, A16EU, A16EU, A16EU
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.