SE859GL
Replacement of Bendix S4LN-20, -21, -1209, or -1227 model magnetos with Slick Model 4250 or 4251 magnetos. Held by Champion Aerospace LLC, which holds 27 approved modifications in all. Last revised February 10, 2009. 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; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
- Models
- AEIO-320-E1A, IO-320-D1A, IO-320-E2A, IO-320-E1A, AIO-320-A1B, AIO-320-B1B, AIO-320-C1B, IO-320-F1A, AEIO-320-E2A, IO-320-B1A, IO-320-B1B, AIO-320-A2B, IO-320-C1A, IO-320-D1B, IO-320-B2A, IO-320-B1C
- Type certificates
- 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12
- 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.