SA2492SO
Installation of Appalachian Accessories stainless steel brake discs, P/N 75-25A. Held by Aviation Products, INC, which holds 64 approved modifications in all. Last revised September 29, 1995. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The New Piper Aircraft Inc.
- Models
- M337B (USAF 02A), T337D, T337C, T337E, T337B, 337B, 337A (USAF 02B), 337, PA-28-236
- Type certificates
- A6CE, A6CE, A6CE, A6CE, A6CE, A6CE, A6CE, A6CE, 2A13
- On this site
- Cessna 337 Skymaster 370 registered
Cessna M337 34 registered
Cessna T337 193 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,636 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.