STC SA957NW

Supplemental type certificate · Sierra Industries Ltd.

Holder
Sierra Industries Ltd. · United States
Status
Current · Reissued
Status date
July 31, 2017
Applied
January 29, 1980
Product
Aircraft · Small Airplane
Certification basis
Part 3, Part 21
Data sheet
TCDS3A13

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

What it approves

Installation of RCA digital weather radar system.

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: SA957NW

Part 3 of the Civil Air Regulations, effective November 1, 1949 as amended by 3-1 through 3-12.

Original Product – Type Certificate Number: 3A13 Make: Cessna Model: 182Q, R182, TR182, 182P, 182R, T182

Installation of RCA digital weather radar system in accordance with Robertson Aircraft sealed Drawing List No. 81.

Date of Application: January 29, 1980 Date Reissued: 11/8/84; 10/10/86; 9/8/05; 7/31/17 Date of Issuance: June 16, 1980 Date Amended: 11/12/80; 1/21/83

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: SA957NW

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: SA957NW

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

Date of Issuance: June 16, 1980 Date Amended: January 21, 1983 Date of Reissuance: July 31, 2017

The 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 other type design changes or previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

This installation requires the ailerons to be rebalanced to within 0.0 to 3.0 inch-pounds leading edge heavy. The aileron rebalance must be accomplished in accordance with Robertson Aircraft Drawing 81 -300.

-END-

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA957NW

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 · 6

MakeModelData sheet
Textron Aviation Inc.182P3A13
Textron Aviation Inc.182Q3A13
Textron Aviation Inc.182R3A13
Textron Aviation Inc.R1823A13
Textron Aviation Inc.T1823A13
Textron Aviation Inc.TR1823A13

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