What it approves
Increase normal category maximum gross weight from 2300 to 2400 lbs. and increase utility category maximum grow weight from 2000 to 2100 lbs. per Installation Instructions, STC SA1945CE, Gross Weight Increase for the C172N with an FAA approval date of January 3, 1989, or later.
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.
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1945CE
This certificate issued to: Power Flow Systems, Inc.
795 Fentress Blvd, Ste A & B Daytona Beach, FL 32114
PT 3 of Civil Air Regulations (Cont.).
Original Product Type Certificate Number: 3A12 Make: Cessna
Model: 172N Description of Type Design Change:
Increase normal category maximum gross weight from 2300 to 2400 lbs. and increase utility category maximum gross weight from 2000 to 2100 lbs. per Installation Instructions, STC SA1945CE, Gross Weight Increase for the C172N with an FAA approval date of January 3, 1989, or later.
1) Airplane Flight Manual (AFM) Supplement, P/N AFMS-7901, with an FAA approval date of December 21, 1988, is required equipment when this modification is installed on 172N Serial Nos. 17271035 through 17272884.
Date of Application: February 27, 1984 Date Reissued: February 19, 2004
Date of Issuance: March 2, 1984
Date Amended: January 3, 1989; May 20, 2025
(for) Christina M. Underwood Manager, East Certification Branch
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1945CE
(Continuation Sheet) Number: SA1945CE Civil Air Regulations (Cont.):
effective November 1, 1949, as amended by 3-1 through 3-12.
Limitations and Conditions(cont.):
2) Airplane Flight Manual (AFM) Supplement, P/N AFMS-8001, with an FAA approval date of December 21, 1988, is required equipment when this modification is installed on 172N Serial Nos. 17270050 and 17272885 through 17374009.
3) This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that airplane.
4) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.
END
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 1
| Make | Model | Data sheet |
|---|---|---|
| The Cessna Aircraft Company | 172N | 3A12 |
Every issue · 2
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| May 20, 2025 | Amended, current | Certificate |
| February 19, 2004 | Reissued, earlier issue | Certificate |