STC SA3-672

Supplemental type certificate · D'Shannon Products Ltd.

Holder
D'Shannon Products Ltd. · United States
Status
Current · Reissued
Status date
July 14, 2011
Applied
July 25, 1961
Product
Aircraft · Single-Engine
Certification basis
Part 3, Part 21
Data sheet
TCDSA-799

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Installation of Lycoming O-360-A1A, A1D, or B1B engine with McCauley 2D36C14-X/78KM-4 propeller or Lycoming O-360-A1A and A1D engines with Hartzell HC-C2YK-1A/7666A-2 propeller. Data required: Doyn Aircraft, Inc. Drawings: 1000, 1005 Rev. C, 1006 Rev. C, 1009, 1010 Rev. A, 1011, 1012 Rev. A, 1013, 1014, 1015, 1016, 1099, 1100 Rev. B, 1101 Rev. A, 1102, 1103 Rev. A, 1104, 1107, 1150. Drawing Changes Notices: 1005-5A, 1006-8A, 1006-6, 1009-2A, 1199-1A, 1199-2A, and 1199-3A.

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

This certificate issued to

Part 3 of the Civil Air Regulations.

Installation of Lycoming O-360-A1A, A1D, or B1B engine with McCauley 2D36C14-X/78KM-4 propeller or Lycoming O-360-A1A and A1D engines with Hartzell HC-C2YK-1A/7666A-2 propeller. Data required: Doyn Aircraft, Inc. Drawings: 1000, 1005 Rev. C, 1006 Rev. C, 1009, 1010 Rev. A, 1011, 1012 Rev. A, 1013, 1014, 1015, 1016, 1099, 1100 Rev. B, 1101 Rev. A, 1102, 1103 Rev. A, 1104, 1107, 1150. Drawing Changes Notices: 1005-5A, 1006-8A, 1006-6, 1009-2A, 1199-1A, 1199-2A, and 1199-3A.

The following FAA Approved Airplane Flight Manual Supplements are required:

1. Dated July 14, 1961, is required for Lycoming O-360-A1A engine and McCauley Prop;

2. Dated June 28, 1963, is required for Lycoming O-360-B1B engine and McCauley Prop;

3. Dated October 20, 1965, is required for Lycoming A1A or A1D engine and McCauley or Hartzell Prop.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

D’Shannon Products, Ltd.

1309 County Road 134 Buffalo, MN 55313 799 Make : Cessna Model : 170A, 170B Date of application :

Date of issuance : July 25, 1961

Date reissued : 6/28/63; 10/20/65; 1/25/66; 5/17/78; 5/12/11;

7/14/11

( Signature) Melvin D. Taylor Manager Atlanta Aircraft Certification Office

( Title)

ADs that name this STC · 2

An AD can apply because an STC is installed, or mention one in its text.

Approved models · 2

MakeModelData sheet
The Cessna Aircraft Company170AA-799
The Cessna Aircraft Company170BA-799

Every issue · 2

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
July 14, 2011Reissued, currentCertificate
May 12, 2011Reissued, earlier issueCertificate