SA00958SE
Manufacture and installation of audio control panel in accordance with wiring diagrams, specifications, and photographs contained within the FAA project file. Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval for change in type design is limited to Cessna Model 177, Serial Numbers 17700123 and 17700674 only. Held by Heyworth Eugene, which holds 4 approved modifications in all. Last revised August 22, 2001. System: electrical power.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 177
- Type certificate
- A13CE
- 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 20, 2026.