SA00514SE
Installation of vortex generators on the wings and rudder and installation of a strake on the outboard side of each engine. Held by Micro Aerodynamics INC, which holds 77 approved modifications in all. Last revised April 28, 1998. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 421B
- Type certificate
- A7CE
- On this site
- Cessna 421 Golden Eagle 769 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 7, 2026.