# STC SA1945CE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Power Flow Systems Inc. - Description: 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. - Status date: May 20, 2025 - Data sheets: 3A12 - Certificate PDF: https://openairdocs.org/files/sha256/d5/36/d536077717f3f0950e1b802439b5eda144fa046c4203afd4cfbda7ba408ff1d6 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119567406820250523163655.0001 - Page: https://openairdocs.org/stc/SA1945CE ## ADs that name it None. ## Approved models (1) - The Cessna Aircraft Company 172N (TCDS 3A12) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can 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 ## Every issue (2) - May 20, 2025: Amended, Current. [certificate](https://openairdocs.org/files/sha256/d5/36/d536077717f3f0950e1b802439b5eda144fa046c4203afd4cfbda7ba408ff1d6) - February 19, 2004: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/d9/67/d967c050e484117654ff59d20e8e6e346dd06ad294eff57fac39b9640e1535d7) --- From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.