SA00563AT
Installation of Appalachian Accessories carbon steel brake discs, P/N AA-22. Held by Aviation Products INC. Last revised January 24, 1995. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The New Piper Aircraft Inc.; SOCATA - Groupe Aerospatiale; B-N Group Ltd.; B-N Group Ltd.
- Models
- PA-39, GA-7, BN-2, BN-2A
- Type certificates
- A1EA, A17SO, A17EU, A17EU
- On this site
- Piper PA-39 Twin Comanche C/R 82 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 20, 2026.