SA00186AT
Installation of carbon steel brake discs that have melonite surface treatment. Held by Aviation Products, INC, which holds 64 approved modifications in all. Last revised November 14, 1994. 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
- Models
- 172, 182, 172RG, 150, 177, 177RG
- Type certificates
- 3A12, 3A13, 3A17, 3A19, A13CE, A20CE
- On this site
- Cessna 150 7,993 registered
Cessna 172 Skyhawk 20,676 registered
Cessna 177 Cardinal 2,158 registered
Cessna 182 Skylane 11,831 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.