# STC SA544GL

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Shadin Avionics, United States
- Description: Installation of a Shadin Company fuel flow indicating system.
- Applied: May 22, 1981
- Status date: December 11, 1985
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- Certificate PDF: https://openairdocs.org/files/sha256/50/31/50312da8bcd55076d5c2af016b3c65657c9fa237ccf540505bd99485decb091e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0E0D436C7106BE1485256CC200122923.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA544GL

## ADs that name it (0)

None.

## Approved models (6)

- Cessna Aircraft Company 320D ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320E ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320F ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 335 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 340 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 340A ([TCDS 3A25](https://openairdocs.org/tcds/3A25))

## 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.

Number SA544GL This certificate issued to

Part 3 of the Civil Air Regulations.

(See Type Certificate Data Sheet 3A25 for complete certification basis.)

Installation of a Shadin Company Fuel Flow Indicating System in accordance with Shadin Company Report number 4028, revised October 12, 1985 or subsequent FAA approved revision.

1) This approval should not be extended to other airplanes of this model that incorporate any other previously approved modification, unless it is determined that the interrelationship between this change and any other previously approved modification will introduce no adverse effect on the airworthiness of these airplanes.

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 3A25 Make : Cessna Model : 320D, 320E, 320F, 340, 340A, and 335 Date of application : May 22, 1981

Date of issuance : July 29, 1981

Date reissued : June 8, 2006

Date amended : June 15, 1983, December 11, 1985

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

( Title)

## Every issue (1)

- December 11, 1985: Amended, Current. [certificate](https://openairdocs.org/files/sha256/50/31/50312da8bcd55076d5c2af016b3c65657c9fa237ccf540505bd99485decb091e)

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