SA1958SO
Installation of Appalachian Access. stainless steel brake rotor discs P/N 73-47. Held by Appalachian Accessories, which holds 45 approved modifications in all. Last revised January 14, 1987. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Maule Aerospace Technology Inc.; Maule Aerospace Technology Inc.
- Models
- Bee Dee M-5-235C, Bee Dee M-6-235
- Type certificates
- 3A23, 3A23
- 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.