SA2176SO
Replacement of Cleveland brake discs P/N 164-15A or164-115A with Appalachian Accessories'stainless steel brake discs, P/N 75-15A. Held by Appalachian Accessories, which holds 45 approved modifications in all. Last revised September 25, 1987. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bellanca Aircraft Corporation; Bellanca Aircraft Corporation; Bellanca Aircraft Corporation
- Models
- 17-31A, 17-30A, 17-31ATC
- Type certificates
- A18CE, A18CE, A18CE
- On this site
- Bellanca 17 Viking 628 registered
- 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 12, 2026.