SA10221SC
Installation of a Chelton Aviation Corp. AP-3C autopilot in accordance with Master Drawing List No. MS-006-12, Rev. F, dated February 3, 2004, or later FAA approved revision. FAA approved Airplane Flight Manual MS-006-14, Rev. I. R., dated February 5, 2004, or later FAA approved Revision is required. Held by Chelton Aviation Corporation, which holds 19 approved modifications in all. Last revised February 5, 2004. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 177RG
- Type certificate
- A20CE
- On this site
- Cessna 177 Cardinal 2,158 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 13, 2026.