SA4934NM
Installation of vortex generators on the wing and vertical stabilizer, and 5% take off gross weight increase. Held by Micro Aerodynamics INC, which holds 77 approved modifications in all. Last revised September 25, 2019. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
- Models
- 335, 340, 340A
- Type certificates
- 3A25, 3A25, 3A25
- 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 5, 2026.