# STC SE492GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Shadin Avionics, United States
- Description: Incorporation of a fuel flow transducer.
- Applied: December 16, 1980
- Status date: June 8, 2006
- Product: Engine
- Certification basis: Part 13, Part 21
- Data sheets: [TCDS E4CE](https://openairdocs.org/tcds/E4CE)
- Certificate PDF: https://openairdocs.org/files/sha256/25/aa/25aa55d75fb577a1e69cba6284a53badafe8d3ba2945ccce4f3fbe9ade4929f3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5301FF5C71B38DAE862575EF00535C99.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE492GL

## ADs that name it (0)

None.

## Approved models (6)

- Rolls-Royce Corporation 250-C18A ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Rolls-Royce Corporation 250-C18C ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Rolls-Royce Corporation 250-C20 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Rolls-Royce Corporation 250-C20B ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Rolls-Royce Corporation 250-C20J ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Rolls-Royce Corporation 250-C20R/1 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))

## 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 E4CE for complete certification basis.)

Incorporation of a fuel flow transducer in accordance with Shadin Company Report Number 4033, revised February 12, 1990, or later FAA Approved Revision.

1) The approval of this change in type design applies to the basic Allison Model 250-C18A, 250-C18C, -C20, -C20B, -C20J and – C20R-1 engines which are otherwise unmodified. This approval should not be extended to other engines of these models on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect on the airworthiness of these engines.

2) 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 E4CE Make : Allison Model : 250-C18A, -C18C, -C20, -C20B, -C20J and -C20R-1

Date of application : December 16, 1980

Date of issuance : January 13, 1981

Date reissued : June 8, 2006

Date amended : July 17, 1981, April 29, 1982, July 22, 1983, March 7, 1990

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

(Title)

## Every issue (1)

- June 8, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/25/aa/25aa55d75fb577a1e69cba6284a53badafe8d3ba2945ccce4f3fbe9ade4929f3)

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