# STC SA1242NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Carol s Flying Service, United States
- Description: Installation of a Hartzell propeller on a Pratt & Whitney engine
- Applied: March 3, 1981
- Status date: May 7, 1981
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A16](https://openairdocs.org/tcds/1A16)
- Certificate PDF: https://openairdocs.org/files/sha256/21/b5/21b546095527f2f09ca8da38dd6dc3d86c86301d888f04c73f31e36dd41d0996
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1D59509B9E51730286257A3D004AA8AD.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1242NW

## ADs that name it (0)

None.

## Approved models (1)

- Allied Ag Cat Productions Inc. G-164A ([TCDS 1A16](https://openairdocs.org/tcds/1A16))

## 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 SAI242NW This certificate issued to: Carol's Flying Service Purd 8.10 (a) the Civi1 Air regulationa Original Product - Type Bertificate Aumber: 1A16 Make: Grumman Model: G-164A Descriplin Type Desin Chunge Installation of a Hartzell HC-B3P30-2E/P10160-6 propeller on a Pratt & Whitney R985-ANl engine in accordance with Carol's Flying Service Installation Instructions Number R985/829.

Limitations and Conditions: Data pertaining to this modification are considered inadequati for duplication in other aircraft. This approval is limited to the installation in Grumman G-164A, Serial Number 829 only. A copy of this Certificate and Addendum No.

SA1242NW shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: March 3, 1981 Tute missued:

Date of Issuance: May 7, 1981 Date Amended:

FEDERAL AVIATION Charles Colehveder TOMINISTRATO Acting Chiet, Certification Office Seattle Area Aircraft (Title)

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) May 7, 1981 Number SAI242NW Supplemental Type Certificate ADDENDUM NO. SA1242NW The conditions and limitations of Type Certificate Data Sheet Number 1Al6 apply except where superseded by the following:

Supplemental Type Certificate Data Sheet, which is part of STC SAl242NW, prescribes the conditions and limitations under which the STC was issued meets the airworthiness requirements of the Civil Air Regulations.

Supplemental Type Certificate HOLDER: Carol's Flying Service GRUMMAN G-164A (RESTRICTED (AGRICULTURAL) CATEGORY) AS MODIFIED BY STC SA1242NW Engine: Pratt & Whitney R985-AN1 (with one 4 1/2 order damper and one 9th order damper.)

Engine Limits: 450 Hp @ 2300 rpm @ 37.5" Hg Manifold Pressure Fuel: 80/87 minimum octane aviation gasoline Propeller and Hartzell HC-B3P30-2E/P10160-6 Propeller Limits: Diameter: 95" maximum; 95" minimum

AVOID CONTINUOUS OPERATION BETWEEN 1600 RPM AND 1800 RPM Instrument Markings: Place a yellow arc on the tachometer (rpm) between 1600 rpm and 1800 rpm

- END -

**FAA FORM 6110-2-1 (10-69)**

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

## Every issue (1)

- May 7, 1981: Issued, Current. [certificate](https://openairdocs.org/files/sha256/21/b5/21b546095527f2f09ca8da38dd6dc3d86c86301d888f04c73f31e36dd41d0996)

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