# STC SA172EA

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hoffman Walter E Jr, United States
- Description: Reinforcement of rearmost seat and installation of additional safety belt. (PA23-250 s/n 27-2000 and up) (N2T-1 S/N 27-2000 AND UP)
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10), [TCDS A-2-573](https://openairdocs.org/tcds/A-2-573)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C0192DE643E8E35786256CE20074B497.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA172EA

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Timm Aircraft Corporation N2T-1 ([TCDS A-2-573](https://openairdocs.org/tcds/A-2-573))

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