# STC SA498NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Blancher, Howard S., United States
- Description: Installation of a Continental engine, McCauley propeller, Cessna 175C engine nacelle, engine mount, cowl flaps
- Applied: June 23, 1977
- Status date: August 18, 1977
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A17](https://openairdocs.org/tcds/3A17)
- Certificate PDF: https://openairdocs.org/files/sha256/e4/83/e48340222d1e20bddb5a7cd0cd283bf7a57940c1c754cedd5d6a715bd44bc9bc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E4230AD964B58B5C86257A450053A68D.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA498NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 175 ([TCDS 3A17](https://openairdocs.org/tcds/3A17))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- August 18, 1977: Issued, Current. [certificate](https://openairdocs.org/files/sha256/e4/83/e48340222d1e20bddb5a7cd0cd283bf7a57940c1c754cedd5d6a715bd44bc9bc)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.