# STC SA674NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aircraft Specialties, Inc., United States
- Description: Installation of a Continental engine, McCauley propeller
- Applied: October 2, 1978
- Status date: February 23, 1979
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/f0/55/f0553e0df49cb6d9a23f7bff7fbc08044aec7c6c87da514f12f58717da7e16e6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8A362038EAB0238786257A410066CCE0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA674NW

## ADs that name it (0)

None.

## Approved models (1)

- Hawker Beechcraft Corporation N35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

STC BOOR United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAGT ANN This certificate issued to: Aircraft Specialties, Inc.

Purt 3 of the Civil Air Regulations, as amended to May 15, 1956; including Amendment 3-8.

Original Product - Typeertificate Number: 3A15 Make: Beech Model: N35 Description of Type Design Change: Installation of a Continental I0-520-BA engine, IcCauley 3A32C76/S-82NB-2 propeller and associated systems in accordance with Aircraft Specialties, Inc., Installation Instructions No. N35-1000.

Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Beech Model N35, Serial Number D-6573 only with Brittian wing tip tanks in accordance with STC SA4-1629. A copy of this Certificate, FAA Approved Flight Manual Supplement, and Aircraft Specialties Installation Instructions N35-1000 shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: October 2, 1978 I ate wissued:

Date of Issuance: . February 23, 1979 Date Amended:

FEDERAL AVIATION By Direction of the Administrator 0.2. к (Signal e TO MINISTRATO Acting Chief, Engineering and Manufacturing Branch (Title)

47.

## Every issue (1)

- February 23, 1979: Issued, Current. [certificate](https://openairdocs.org/files/sha256/f0/55/f0553e0df49cb6d9a23f7bff7fbc08044aec7c6c87da514f12f58717da7e16e6)

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