# STC SH77AL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: ERA Helicopters Inc, United States
- Description: Tundra snow shoes.
- Status date: January 1, 1960
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS 6H1](https://openairdocs.org/tcds/6H1), [TCDS 6H2](https://openairdocs.org/tcds/6H2), [TCDS H1WE](https://openairdocs.org/tcds/H1WE), [TCDS 4H11](https://openairdocs.org/tcds/4H11)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D9169401F9BB8A1C862570C20067FDC4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH77AL

## ADs that name it (0)

None.

## Approved models (6)

- Hiller Aviation UH-12 Series ([TCDS 6H1](https://openairdocs.org/tcds/6H1))
- Hiller Aviation UH-12 Series ([TCDS 6H2](https://openairdocs.org/tcds/6H2))
- Hiller Aviation UH-12L ([TCDS H1WE](https://openairdocs.org/tcds/H1WE))
- Hiller Aviation UH-12L4 ([TCDS H1WE](https://openairdocs.org/tcds/H1WE))
- Rogerson Hiller Corporation UH-12E ([TCDS 4H11](https://openairdocs.org/tcds/4H11))
- Rogerson Hiller Corporation UH-12E-L ([TCDS 4H11](https://openairdocs.org/tcds/4H11))

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