# STC SR01804SE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Onboard Systems International LLC, United States
- Description: Installation of Onboard Systems International Load Weigh System
- Applied: June 23, 2006
- Status date: October 7, 2021
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU)
- Certificate PDF: https://openairdocs.org/files/sha256/d8/f4/d8f4a728a4b19b557ea04148771087240cd0f71f2d348c60d7af8f91d53cee4d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8C7A0895AAAD4685862587FA00711757.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR01804SE

## ADs that name it (0)

None.

## Approved models (6)

- Airbus Helicopters AS-350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350B1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350B2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350B3 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350BA ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))

## 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 ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SR01804SE Onboard Systems International, LLC 13915 NW 3rd Court Vancouver, WA 98685 Part 27 the Federal Aviation Regulations H9EU Airbus Helicopters AS350B, AS350B1, AS350B2, AS350B3, AS350BA and AS350D Installation of Onboard Systems International Load Weigh System in accordance with the Master Drawing List (MDL) No. 155-116-00, Revision 8, dated May 31, 2019, or later Federal Aviation Administration (FAA) approved revision.

Approval of this change in type design applies only to those AS350 model rotorcraft listed above that are equipped with a Eurocopter 1400 kg Cargo Swing System with a Siren P/N S1609-6, or a Siren P/N AS21-5-7 or an Onboard Systems P/N 528-023-51 cargo hook. This approval should not be extended to other rotorcraft 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 rotorcraft. Rotorcraft modified in accordance with this STC must be operated in accordance with Onboard Systems Rotorcraft Flight Manual Supplement (RFMS) 121-032-00, Revision 1, dated May 9, 2019, or later FAA approved revision and maintained in accordance with Onboard Systems Instructions for Continued Airworthiness, document no. 123-026-00, Revision 3, dated November 15, 2018, or later FAA-accepted revision. A copy of this certificate, RFMS, ICA, and the applicable Owner’s Manual (per the MDL), must be maintained as part of the permanent records of the modified rotorcraft.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

June 23, 2006 October 7, 2021 July 11, 2019 For Acting Manager, Seattle ACO Branch 2 December 5, 2007

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SR01804SE 2

## Every issue (3)

- October 7, 2021: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d8/f4/d8f4a728a4b19b557ea04148771087240cd0f71f2d348c60d7af8f91d53cee4d)
- July 11, 2019: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/dc/0e/dc0e6dcd75a0fb66fbdd7f7a38b7fc35b5569bee260aa4fbcceb4e2d7e45418d)
- December 5, 2007: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/3d/96/3d969f0ab6f6f9208559ec1e57c97b9cd6daf472289695b509e6d508eacf9df2)

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