# STC SH1122GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Shadin Avionics, United States
- Description: Installation of a Shadin Co. fuel flow indicator.
- Applied: August 16, 1986
- Status date: June 8, 2006
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/03/e7/03e7aabb8039b73e2c0c54a68eae225cb1abc0f263cabdef0b3f20d462a9d1fd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CB1931EBDB107699862575E50052EFA1.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH1122GL

## ADs that name it (0)

None.

## Approved models (2)

- Bell Helicopter Textron 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## 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 29 of the Federal Aviation Regulations.

(See Type Certificate Data Sheet H2SW for complete certification basis.)

Installation of a Shadin Company Fuel Flow Indicator in accordance with Shadin Report 4104 revised October 28, 1986, or other FAA approved revision.

1) This change in type design applies to basic helicopters of these models which are otherwise unmodified. This approval should not be extended to other helicopters of these models 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 helicopters.

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 H4SW Make : Bell Helicopter Textron Model : 212, 412 Date of application : August 16, 1986

Date of issuance : January 8, 1987

Date reissued : June 8, 2006

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

( Title)

## Every issue (1)

- June 8, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/03/e7/03e7aabb8039b73e2c0c54a68eae225cb1abc0f263cabdef0b3f20d462a9d1fd)

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