# STC SE1688GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Shadin Avionics, United States
- Description: Installation of a Shadin Company fuel flow transducer.
- Applied: July 23, 1991
- Status date: June 8, 2006
- Product: Engine
- Certification basis: Part 21, Part 33
- Data sheets: [TCDS E3SO](https://openairdocs.org/tcds/E3SO)
- Certificate PDF: https://openairdocs.org/files/sha256/61/f0/61f0c4064d51f2c257080d2401fd8912e0df734a123553b78aa78d56c59bc7ae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0F9A2F4CA38687FE862575E500533F24.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE1688GL

## ADs that name it (0)

None.

## Approved models (9)

- Teledyne Continental Motors IO-550-A ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-B ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-C ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-D ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-E ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-F ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-G ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-L ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))
- Teledyne Continental Motors IO-550-N ([TCDS E3SO](https://openairdocs.org/tcds/E3SO))

## 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 33 of the Federal Aviation Regulations. (See Type Certificate Data Sheet E3SO for complete certification basis.)

Installation of a Shadin Company Fuel Flow Transducer in accordance with Shadin Company Report Number 4110, Revision H, dated March 14, 2001, or later FAA approved revision.

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

2) Installation of the Fuel Flow Transducer on the IO-550-N must be performed with STC SA01652CH.

3) 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.

Shadin Avionics 6831 Oxford Street St. Louis Park, MN 55426 E3SO Make : Teledyne Continental Motors Model : IO-550-A, -B, -C, -D, -E, -F, -G, -L, and -N

Date reissued : June 8, 2006

Date amended : December 5, 1996, March 15, 2001, June 10, 2002

( Signature) Charles L. Smalley Manager, Systems & Flight Test Branch Chicago Aircraft Certification Office

(Title) Date of application : July 23, 1991

Date of issuance : December 24, 1991

## Every issue (1)

- June 8, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/61/f0/61f0c4064d51f2c257080d2401fd8912e0df734a123553b78aa78d56c59bc7ae)

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