# STC SE859GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Champion Aerospace LLC, United States
- Description: Replacement of Bendix S4LN-20, -21, -1209, or -1227 model magnetos with Slick Model 4250 or 4251 magnetos.
- Applied: June 7, 1985
- Status date: February 10, 2009
- Product: Engine
- Certification basis: Part 13
- Data sheets: [TCDS 1E12](https://openairdocs.org/tcds/1E12)
- Certificate PDF: https://openairdocs.org/files/sha256/9d/0f/9d0ff8c38fc445d627207b46ce047a7d2a776b4a2a743818c1b3330d2adabdbe
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4AB4A3BC11E8548E862575990067BBF6.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE859GL

## ADs that name it (0)

None.

## Approved models (16)

- Textron Lycoming AVCO Corporation AEIO-320-E1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation AEIO-320-E2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation AIO-320-A1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation AIO-320-A2B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation AIO-320-B1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation AIO-320-C1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-B1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-B1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-B1C ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-B2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-C1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-D1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-D1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-E1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-E2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Textron Lycoming AVCO Corporation IO-320-F1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Part 13 of the Civil Air Regulations.

(See Type Certificate Data Sheet 1E12 for the complete certification basis).

Original Product--Type Certificate Number: 1E12 Make: AVCO Lycoming

Model : IO-320-B1A, -B1B, -B1C, -B2A, -C1A, -D1A, -D1B, -E1A, -E2A, -F1A, AIO-320-A1B, -A2B, -B1B, -C1B AEIO-320-E1A, -E2A Description of Type Design Change:

Replacement of Bendix Model S4LN-20, -21, -1209, or -1227 magnetos with Slick Model 4250 and 4251 magnetos in accordance with Slick Service Letter SL 3-85, “Conversion from Bendix to Slick Magnetos”, dated June 13, 1985, or later FAA approved revisions.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. The limitations and conditions shown on Type Certificate Data Sheet Number 1E12 for the AVCO Lycoming model IO-320, AIO-320, and AEIO-320 series of engines remain applicable.

3. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft.

4. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Champion Aerospace LLC 1230 Old Norris Road Liberty, SC 29657

Date reissued : February 10, 2009

( Signature) Thaddeus D. Krolicki, Jr.

Manager, Propulsion Branch Chicago Aircraft Certification Office

( Title) Date of application : June 7, 1985

Date of issuance : June 13, 1985

## Every issue (1)

- February 10, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/9d/0f/9d0ff8c38fc445d627207b46ce047a7d2a776b4a2a743818c1b3330d2adabdbe)

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