# STC SH829NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Onboard Systems, United States
- Description: Installation of a weighing system.
- Applied: May 31, 1979
- Status date: August 8, 1990
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/d7/f7/d7f768dcfef4eaf1bf2224a36999caf06c13856186d807767e1112c419ceb1bf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/09B5233C235D4AD085256CC2006222F0.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH829NW

## ADs that name it (0)

None.

## Approved models (9)

- MD Helicopter Inc. 369 ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369A ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369D ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369E ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369F ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HE ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HM ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HS ([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: SH829N4 This certificate issued to: Onboard Systems Purt 6 of the CiVIl Air Regulations.

Original Product - Type bertificate Number: HWE Make: Hughes Med: 3hd 369А, 369Н, 369НИ, 369H5, 369НЕ, 3690, 3092 Description of Type Design Change: Installation of a weighing system in accordance with Onboard Weighing Systems Installation Instructions Number 2545 (all models except the 369E and 369F); or (for all models) Fabrication of Onboard Systems Model H-51 Cargo Hook Load Cell System in accordance with FAA approved Onboard System Master Drawing List No. 155-005-00, dated January 10, 1990, or later FAA approved revision, and, Installation of this system in accordance with FAA approved Onboard Systems Owners Manual No. 120-007-00, Revision "C", dated April 28, 1989, (See Continuation Sheet) Limitations and Conditions: Approval of this change in type design applies to the above model helicopters only. (NOTE: Models 369D, 369E and 369F must be equipped with Hughes Cargo Hook Kit Number 369H90072). This approval should not be extended to other helicopters of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that

Date of Application: May 31, 1979 Jule missued: August 8, 1990 Date of Issuance: September 6, 1979 Vale unended: August 8, 1990 FEDERAL AVIATION By Direction of the Administrator Stewart K Miller (Signature) TMINISTRAND Assistant Manager, Seattle Aircraft Certification Office (Title)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SH829NW Description of Type Design Change: (continued) or later FAA approved revision. Inspect load cell in accordance with Section 4.6 of Onboard Systems Owners Manual No. 120-007-00, Revision "C", dated April 28, 1989, or later FAA approved revision.

Limitations and Conditions: (continued) Rotorcraft modified in accordance with this STC must be operated in accordance with an FAA approved copy of the Rotorcraft Flight Manual Supplement revised August 8, 1990, or later FAA approved revision. A copy of this Certificate, Continuation Sheet No.

SH829NW, the maintenance manual and FAA approved Rotorcraft Flight Manual Supplement must be maintained as part of the permanent records of the modified helicopter.

were wer FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES

## Every issue (1)

- August 8, 1990: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d7/f7/d7f768dcfef4eaf1bf2224a36999caf06c13856186d807767e1112c419ceb1bf)

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