# STC SA1705WE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Flint Aero Inc, United States - Description: Installation of twelve (12) gallon auxiliary fuel tank in each wing, inboard of tip - Applied: May 7, 1968 - Status date: December 18, 2006 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6) - Certificate PDF: https://openairdocs.org/files/sha256/2c/e1/2ce1f66496be8d22ef72deafee793a7275489fd5f20759e1944e83b731d3dc36 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/844767D74FCCC3E38625727600677EDC.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1705WE ## ADs that name it (0) None. ## Approved models (11) - The Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180A ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180B ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180C ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180D ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180E ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180F ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180G ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180H ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180J ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) - The Cessna Aircraft Company 180K ([TCDS 5A6](https://openairdocs.org/tcds/5A6)) ## 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. Number SA1705WE This Certificate issued to Part 3 of the Civil Air Regulations. See Type Certificate Data Sheet 5A6. Description of Type Design Change: Installation of twelve (12) gallon auxiliary fuel tank in each wing, inboard of tip in accordance with FAA sealed Flint Aero Drawing List No. MDL FA-180, no Revision, dated December 18, 1981, or later FAA approved revision, or Flint Aero Master Drawing List No. 15171821, Revision “IR”, dated may 18, 2006, or later FAA approved revision. Limitations and Conditions: The limitations and conditions of Data Sheet 5A6 apply, except as outlined in page 3 of this STC. A copy of this STC must be included in the permanent records of each airplane modified in accordance with this STC. 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. Flint Aero, Inc. 1942 Joe Crosson Drive El Cajon, California 92020-1236 Original Product Type Certificate Number: 5A6 **CESSNA** 180, 180A, 180B, 180C, 180D, 180E, 180F, 180G, 180H, 180J, and 180K landplane and floatplane Date of application: May 7, 1968 Date of issuance: June 12, 1968 Date reissued: Mar. 8, 1976, Feb. 6, 1987, June 15, 1990, Feb. 25, 2000 Date amended: See Page 3 of this STC ( Signature) Manager, Airframe Branch Los Angeles Aircraft Certification Office ( Title) Number SA1705WE Application: 05/07/68 Issue: 06/12/68 Amendments: See page 4 of this STC Reissue: 03/08/76, 02/06/87, 06/15/90, 02/25/2000 **LIMITATIONS AND CONDITIONS** Fuel Capacity Model 180 – 84 gal. (78 gal. useable); two 30 gal. main tanks in wings at (+48) and two 12 gal. (11.5 gal. useable) aux. tanks in wings at (+50). Models 180A through 180D – 89 gal. (78 gal. useable); two 32.5 gal. main tanks in wings at (+48) a nd two 12 gal. (11.5 gal. useable) aux. tanks in wings at (+50). Models 180E through 180J, S/N 18052363 – 89 gal. (83 gal. useable); two 32.5 gal, main tanks at (+48) and two 12 gal. (11.5 gal. useable) aux. tanks in wings at (+50). Models 180K and subsequent with optional Cessna long range main tanks – 108 gal. (103 gal. useable ); two 42 gal. main tanks in wing at (+48) and two 12 gal. (11.5 gal. useable) aux. tanks in wings at (+50). Models 180J, S/N 18052364 through 180K, S/N 18053000 – 85 gal. (79 gal. useable); two 30.5 gal. main tanks at (+48) and two 12 gal. (11.5 gal. useable) aux. tanks in wings at (+50). Placards The following placards are required in the locations noted: Adjacent to auxiliary tank pump switches: “ Aux. fuel 12 U.S. Gal. (11.5 gal. useable). Transfer Aux. fuel only in level flight when main tank is half empty and when ma in tank is not supplying engine. Aux. switch must be off during takeoff, landing, filling and when empty.” Adjacent to each auxiliary tank filler: “12 U.S. Gal. 80/87 Min. grade Av. Gasoline. Aux. fuel switch must be off before filling.” Number SA1705WE Application: 05/07/68 Issue: 06/12/68 Reissue: 03/08/76, 02/06/87, 06/15/90, 02/25/2000 LIMITATIONS AND CONDITIONS ( Continued) Limitation of The approval of this change in type design applies to the basic Applicability Cessna 180 series of the m odels shown on page 1 of this STC. This approval should not be exte nded to other aircraft of these models on which other modifications are incorporated unless it is determined that the interrelations hip between this change and any previously approved modifications will introduce no adverse effect on the airworthiness of these aircraft. Amendment Dates 1. June 26, 1973 2. August 7, 1973 3. December 13, 1974 4. March 12, 1975 5. April 20, 1977 6. February 16, 1982 7. December 18, 2006 add MDL 15171821 Rev “IR” - END - ## Every issue (1) - December 18, 2006: Amended, Current. [certificate](https://openairdocs.org/files/sha256/2c/e1/2ce1f66496be8d22ef72deafee793a7275489fd5f20759e1944e83b731d3dc36) --- 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.