# STC SH1452NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Onboard Systems International, United States
- Description: Installation of electronic weighing system.
- Applied: October 7, 1981
- Status date: April 28, 1987
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/89/3a/893aa519614302d81a5003184803091cc3028bd40a4c40953984869991acb931
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AEDB8C532CD27AF286257A150068412C.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH1452NM

## ADs that name it (0)

None.

## Approved models (1)

- MD Helicopter Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SH1452NM This certificate issued to: Onboard Systems Purt 6 of the CIVII Air Regulations: (See I.C. Data sheet HWE) Original Product .- Type bertificate Number: H3WE Make: Hughes Model: 369H Description of Type Design Change: Installation of an Electronic Weighing System in accordance with FAA sealed Chadwick Drawing List No. 51-10800-1.

Limitations and Conditions: The approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft. Chadwick FAA approved AFM UPR-ement No. 51-10500-1 is required

TE MINISTRATIO Certification Office, ANM-100S (Title)

## Every issue (1)

- April 28, 1987: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/89/3a/893aa519614302d81a5003184803091cc3028bd40a4c40953984869991acb931)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.