SE580SO
Installation of Bendix magneto models S6LN-20 and S6LN-21. Held by Mack'S Aircraft Engine Svc, which holds 2 approved modifications in all. Last revised August 22, 1992. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
- Models
- GO-480-C2C6, GO-480-F3B6, GO-480-B1B, GO-480-F6, GO-480-F4B6
- Type certificates
- E-275, E-275, E-275, E-275, E-275
- 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.