# STC SA1396SO - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Saf-Air Products Inc., United States - Description: Remove drain plug, Cessna Part Number AN814-3DL, from the fuel selector valve, and replace with CAV-180 (MT-1072-77) or CAV-180H-4 (CM-172-77) (*Model: C-172N Serial Nos.: 17261445, 17267585 through 17269309 (1977 Model), 17261578, 17269310 through 17271034 (1978 Model), (Except 17270050), 17271035 through 17272884 (1979 Model), 17270050, 17272885 through 17274009 (1980 Model)) - Applied: November 8, 1982 - Status date: September 28, 2020 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12) - Certificate PDF: https://openairdocs.org/files/sha256/62/84/62842ffe98e8c1e939251e5266ab1f9eac8f5cb2d6abc62ed5f1432867fe7b62 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D3DBD1C9A34F55E0862585FB003E47EA.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1396SO ## ADs that name it (0) None. ## Approved models (1) - The Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/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 AviationAdministration Supplemental Type Certificate Number: _S_A_1_3_9_6_S_O This certificate issued to: Saf-Air Products, Inc. 32839 Manor Park Drive Garden City, MI 48135 Part 3 of -C-iv-i-l A-_ir_R_e_g_ul_a_ti_on_s . Original Product rtype Certificate ']{um6er: 3A12 Make: Cessna Model: *See Page 3 Description of Type Design Change: Remove drain plug, Cessna Part Number AN814-3DL, from the fuel selector valve, and replace with CAV-180 (MT-1072-77) or CAV-180H-4 (CM-172-77) in accordance with instructions dated January 12, 2004, or later FAA revision. This approval should not be extended to other airplanes 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 of those other p reviously approved modifications will produce no adverse effect upon the airworthiness of that airplane. (See continuation sheet 3 of 3) Date of Application: _1_1_/0_8_/_1_9_8_2 Date Reissued: 09/18/1989, 09/28/2020 12/23/1982 Date Amended: 03/17/2004 Christina M. Underwood Title: Manager, Atlanta ACO Branch FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION Page 1 of 3_ United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate Number: _S_A_1_3_9_6_S_O Saf-Air Products, Inc. 32839 Manor Park Drive Garden City, MI 48135 FAA Form 8110-2 (06/20) SUPERSEDES PREVIOUS EDITION Page 2 of _3 United States of America Department of Transportation Federal AviationAdministration Supplemental Type Certificate (Continuation Sheet) Number: _S_A_1_3_9_6_S_O Limitations and Conditions (Cont.) The following placard, located on the instrument panel in clear view of the pilot is required when the drain is installed: "This aircraft is equipped with a belly drain. Drain daily or before each flight," *Model C-172N Serial Numbers: 17261445, 17267585 - 17269309 (1977) 17261578, 17269310 - 17271034 (1978) (Except 17270050) 17271035 - 17272884 (1979) 17270050, 17272885 - 17274009 (1980) Date of Issuance: December 23, 1982 -End- ## Every issue (2) - September 28, 2020: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/62/84/62842ffe98e8c1e939251e5266ab1f9eac8f5cb2d6abc62ed5f1432867fe7b62) - March 17, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/0e/1a/0e1acada170694ee631cb8eb8abef33ddd5910573d7fd9ec2b2ec27b90e56274) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.