STC SH17NW

Supplemental type certificate · Onboard Systems International

Holder
Onboard Systems International · United States
Status
Current · Reissued
Status date
April 28, 1987
Applied
June 30, 1972
Product
Aircraft · Rotorcraft
Certification basis
Part 21
Data sheet
TCDSH4SW

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 5, 2025.

What it approves

Installation of Chadwick Electronic weighing system C-47.

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

This certificate is a scan without a text layerOpen the PDF to read it.

ADs that name this STC · 1

An AD can apply because an STC is installed, or mention one in its text.

Approved models · 2

MakeModelData sheet
Bell Helicopter Textron Inc.212H4SW
Bell Helicopter Textron Inc.412H4SW