# STC SA638GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Shadin Avionics, United States
- Description: Installation of a Shadin Co. 910516 fuel flow indicating system.
- Applied: July 30, 1982
- Status date: June 8, 2006
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A6CE](https://openairdocs.org/tcds/A6CE)
- Certificate PDF: https://openairdocs.org/files/sha256/c5/bf/c5bf06e8d24bbff795ea0c90913f9d075800864cf3b836afd6a6f085bd0be754
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9330412AF26EF7C2862575EF00502AAF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA638GL

## ADs that name it (0)

None.

## Approved models (18)

- Cessna Aircraft Company 337 ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337A ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337B ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337C ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337D ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337E ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337F ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337G ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company 337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company P337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337B ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337C ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337D ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337E ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337F ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337G ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337H-SP ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))

## 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 3 of the Civil Air Regulations.

(See Type Certificate Data Sheet No. A6CE for complete certification basis.)

Installation of a Shadin Company 910516 Fuel Flow Indicating System in accordance with Shadin Company Report Number 4053 , revised July 12, 1984, or subsequent FAA approved revision.

1) FAR 43 is adequate to insure Continued Airworthiness of this modification. 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 A6CE Make : Cessna Model : 337, 337A, 337B, 337C, 337D, 337E, 337F, 337G, 337H, T337B, T337C, T337D, T337E, T337F, T337G, T337H, T337H-SP, P337H Date of application : May 10, 1982

Date of issuance : July 30, 1982

Date reissued : June 8, 2006

Date amended : July 30, 1984

( 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/c5/bf/c5bf06e8d24bbff795ea0c90913f9d075800864cf3b836afd6a6f085bd0be754)

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