# STC SH4793NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Onboard Systems International, United States
- Description: Fabrication of Onboard Systems Model E-73 Cargo Hook Load Cell System
- Applied: September 15, 1989
- Status date: October 7, 2021
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H9SW](https://openairdocs.org/tcds/H9SW)
- Certificate PDF: https://openairdocs.org/files/sha256/33/7f/337f69b6b959f8950ccebef7cf62b684049aeb1f984fd085412bf12ba23c37bd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EA73FB29FA8741BC862587EA006479B9.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH4793NM

## ADs that name it (0)

None.

## Approved models (3)

- Bell Helicopter Textron A Division of Textron Canada 222 ([TCDS H9SW](https://openairdocs.org/tcds/H9SW))
- Bell Helicopter Textron A Division of Textron Canada 222B ([TCDS H9SW](https://openairdocs.org/tcds/H9SW))
- Bell Helicopter Textron A Division of Textron Canada 222U ([TCDS H9SW](https://openairdocs.org/tcds/H9SW))

## 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.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___

## Every issue (2)

- October 7, 2021: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/33/7f/337f69b6b959f8950ccebef7cf62b684049aeb1f984fd085412bf12ba23c37bd)
- January 20, 1990: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/47/e2/47e2d573af9cf7918e112f149892eef5e4e8035535d247b4feb8cea26a44409c)

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