# STC SH71NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Onboard Systems, United States
- Description: Installation of electric weighing system.
- Applied: September 26, 1973
- Status date: April 28, 1987
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1IN](https://openairdocs.org/tcds/H1IN)
- Certificate PDF: https://openairdocs.org/files/sha256/0b/d1/0bd1e1f535209405dccf400321ef0cb21159d8dabab81061f9f92f9f0479642c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7FF454656E08B81186257AE00073BC3D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH71NW

## ADs that name it (0)

None.

## Approved models (3)

- Eurocopter France SA.316B Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))
- Eurocopter France SA.319B Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))
- Eurocopter France SE.3160 Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- April 28, 1987: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0b/d1/0bd1e1f535209405dccf400321ef0cb21159d8dabab81061f9f92f9f0479642c)

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