STC SA672NW

Supplemental type certificate · Sierra Industries Inc

Holder
Sierra Industries Inc · United States
Status
Current · Reissued
Status date
July 31, 2017
Applied
August 11, 1978
Product
Aircraft · Small Airplane
Certification basis
Part 21
Data sheet
TCDSA9CE

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

What it approves

Installation of Hartzell HC-C3YF-1RF/F9587C-17S propeller on Continental IO-520-D engine.

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.

FAA Form 8110-2 (5/14) Page 1 of 3

Reissued on July 31, 2017 to supersede the original STC, which has been lost or misplaced.

Number: SA672NW

Part 21.25 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: A9CE Make: Cessna Model: A188B

Installation of a Hartzell HC-C3YF-1RF/F9587C-17S propeller on a Continental 10-520-D engine in accordance with Robertson Aircraft Installation Instruction Drawing No. 11-700.

Date of Application: August 11, 1978 Date Reissued: 11/22/78; 11/8/84; 10/10/86; 9/8/05; 7/31/17 Date of Issuance: September 29, 1978 Date Amended:

Signature

Title Jim Grigg Manager, Fort Worth A CO Branch, Compliance & Airworthiness Division Sierra Industries, Ltd.

122 Howard Langford Drive Uvalde, TX 78801

FAA Form 8110-2 (5/14) Page 2 of 3

Transfer the ownership of Supplemental Type Certificate Number: SA672NW

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA672NW

FAA Form 8110-2 (5/14) Page 3 of 3

Date of Issuance: September 29, 1978 Date of Reissuance: July 31, 2017

Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifica tion, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate, and Robertson Aircraft Drawing No. 11-700 shall be maintained as part of the permanent records for the modified aircraft.

The conditions and limitations of Type Certificate Data Sheet Number A9CE apply except where suspended by the following:

This Supplemental Type Certificate Data Sheet, which is part of STC SA672NW prescribes the conditions and limitation under which the product for which the STC was issued meets the airworthiness requirements of the Federal Aviation Regulations.

CESSNA A188B, 1PCLM (RESTRICTED CATEGORY)

Engine: Continental IO-520-D

Engine Limits: 300 hp @ 2850 rpm for 5 minutes 285 hp @ 2700 rpm max. continuous

Propeller: Hartzell HC-C3YF-1RF/F9587C-17S

Propeller Limits: Do not operate below 2300 rpm or above 2700 rpm max. continuous

Airspeed Limits: No change

Maximum Weight: No change

Placards: A placard must be in full view of the pilot:

“DO NOT OPERATE PROPELLER CONTINOUSLY EITHER BELOW 2300 RPM OR ABOVE 2700 RPM”

-END-

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA672NW

FAA Form 8110-2 (5/14) Page 4 of 3

ADs that name this STC · 0

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

No AD in this release names this STC

Approved models · 1

MakeModelData sheet
Textron Aviation Inc.A188AA9CE

Every issue · 2

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

DateStatusFiles
July 31, 2017Reissued, currentCertificate
September 8, 2005Reissued, earlier issueCertificate