# STC SH3183NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Croman Corporation, United States
- Description: Pilot-in-Command position to be in left seat with all normal controls and control-mounted switches at that crew station.
- Applied: January 14, 1985
- Status date: August 20, 1985
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS 6H1](https://openairdocs.org/tcds/6H1)
- Certificate PDF: https://openairdocs.org/files/sha256/b9/c9/b9c98934c54acaafe874e841574a5cac26149ccf6421ba0e98ab5f2e9ec0b749
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/32CF8BD463862ADF86257A2C006BF9F9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH3183NM

## ADs that name it (0)

None.

## Approved models (1)

- Hiller Aviation UH-12 ([TCDS 6H1](https://openairdocs.org/tcds/6H1))

## 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 SH 3183NM This certificate issued to: Croman Corporation Part 6 of the CIVIT Air Regulations:

Original Product - Type Certificate Number: 6H-1 Make: Hiller Model: UH-12 (Turbine Conv.)

Pilot-in-Command position to be in left seat with all normal controls and control-mounted switches at that crew station.

Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to Pilot-in-Command operation from the left seat on Hiller UH-12 (Turbine Conv) Rotorcraft, Serial Number 1436 only. The modified rotorcraft must be operated in accordance with an FAA approved copy of the Rotorcraft Flight Manual Supplement dated August 20, 1985, or later FAA Approved Revision. A copy of this Certificate and the Rotorcraft Flight Manual Supplement must be carried in the The tore pest it. tfoling poling dale which is the bris for apporal shall remain in effect until sur rendered, suspended, revked, or a termination date is stherwise established by the Administrater s/ the Federal Aviation Administration Date of Application: January 14, 1985 Date Reissued:

Date of Issuance: . August 20, 1985 Date Amended:

FEDERAL NUTATION By Direction of the Administrator HAdwope TO MINISTRATO Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- August 20, 1985: Issued, Current. [certificate](https://openairdocs.org/files/sha256/b9/c9/b9c98934c54acaafe874e841574a5cac26149ccf6421ba0e98ab5f2e9ec0b749)

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