# STC SA3-123

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hanlon & Wilson Inc, United States
- Description: Heater-muffler assembly 430-10P.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13), [TCDS 5A6](https://openairdocs.org/tcds/5A6)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0BC00770F66F5747862570CA0058059A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-123

## ADs that name it (0)

None.

## Approved models (2)

- The Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 182 Series ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

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