# STC SA858NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Alair Aviation Services, Inc., United States
- Description: Installation of a Continental engine, McCauley propeller
- Applied: October 25, 1979
- Status date: November 13, 1979
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-777](https://openairdocs.org/tcds/A-777)
- Certificate PDF: https://openairdocs.org/files/sha256/3a/08/3a0821829e26a5fd359a1450affe21a0fd7987f226cf96372d507f868e23e0c0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4315A5E01CEDB83386257A3E004F18A4.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA858NW

## ADs that name it (0)

None.

## Approved models (1)

- Hawker Beechcraft Corporation B35 ([TCDS A-777](https://openairdocs.org/tcds/A-777))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA858NN This certificate issued to: Alair Aviation Services, Inc.

Purt 03 of the CiViI Air Regulations, effective November 13, 1945.

Original Product -Type Certificate Number: A-777 Make: Beech Model: B35 Description of Type Design Change: Installation of a Continental 10-470-J engine;

McCauley 2A36C23D-B1/S84B-0 propeller and associated systems in accordance with Alair Aviation Services, Inc., photographs 1 through 3.

Similalions andbunditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Beech B35, Serial Number D-2384 only. A copy of this Certificate and Addendum No. SA858NW shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: October 25, 1979 I ate missued:

Date of Issuance: . November 13, 1979 Date Amended:

FEDERAL AVIATION By Direction of the Administrator D. 2. Riggin TOMINISTRATO Chief, Engineering and Manufacturing Branch (Title) 47 FAA FORM 8110-2 (10-68)

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) November 13, 1979 Number SA858NW Supplemental Type Certificate ADDENDUM NO. SA858NW The conditions and limitations of Type Certificate Data Sheet Number A-777 apply except where superseded by the following:

Supplemental Type Certificate Data Sheet, which is part of STC SA858NW, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Civil Air Regulations.

Supplemental Type Certificate HOLDER: Alair Aviation Services, Inc.

I. BEECH B35 (LANDPLANE - UTILITY CATEGORY) AS MODIFIED BY STC SA858NW Engine: Continental I0-470-J Engine Limits: 225 Hp @ 2600 rpm, takeoff and maximum continuous Temperature Limits: Cylinder Head (Bayonet): 450°F Oil Inlet: 225°F Fuel: 80/87 octane Propeller and Propeller Limits: McCauley 2A36C23D-B1/S84B-0 (up to 230 Hp @ 2650 rpm) Diameter: 84" maximum; 80" minimum Serial Number Eligible: D-2384 only All else per applicable data sheets.

- END -

47.

**PAGE 3 OF 3 PAGES C FAA AC 73-2651**

## Every issue (1)

- November 13, 1979: Issued, Current. [certificate](https://openairdocs.org/files/sha256/3a/08/3a0821829e26a5fd359a1450affe21a0fd7987f226cf96372d507f868e23e0c0)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.