# STC SH1172SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Advanced Flight Engineering Inc, United States
- Description: Installation of an AFE Model 3000 canopy defogger system.
- Status date: March 30, 1981
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F1BA4070027C10FF85256CC2005C2E21.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH1172SO

## ADs that name it (0)

None.

## Approved models (5)

- MD Helicopter Inc. 369D ([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))

---
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.