# STC SH618NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Onboard Weighing Systems, United States
- Description: Installation of the Onboard Weighing System Adapter No. 1500, for use with Eastern Rotorcraft Cargo Hook No 2A15E
- Applied: May 4, 1978
- Status date: June 15, 1978
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS 4H10](https://openairdocs.org/tcds/4H10), [TCDS H1WE](https://openairdocs.org/tcds/H1WE), [TCDS 4H11](https://openairdocs.org/tcds/4H11)
- Certificate PDF: https://openairdocs.org/files/sha256/46/d4/46d4f8a8bcb3d1caabcfd98bcc5dd95bb49f450e112597226e2d65b2b857197b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/19519A733A9BB81F86257A4500523ADD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH618NW

## ADs that name it (0)

None.

## Approved models (4)

- Hiller Aviation UH-12D ([TCDS 4H10](https://openairdocs.org/tcds/4H10))
- Hiller Aviation UH-12L ([TCDS H1WE](https://openairdocs.org/tcds/H1WE))
- Hiller Aviation UH-12L4 ([TCDS H1WE](https://openairdocs.org/tcds/H1WE))
- Siam Hiller Holdings Inc. UH-12E ([TCDS 4H11](https://openairdocs.org/tcds/4H11))

## What the certificate says

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

## Every issue (1)

- June 15, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/46/d4/46d4f8a8bcb3d1caabcfd98bcc5dd95bb49f450e112597226e2d65b2b857197b)

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