# STC SA2454WE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Madras Air Service, United States - Description: Installation of Madras wing tips. (170B NORMAL CATEGORY) - Applied: January 6, 1970 - Status date: February 21, 1973 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS A-799](https://openairdocs.org/tcds/A-799) - Certificate PDF: https://openairdocs.org/files/sha256/f8/16/f816d51e5f6120d24945f6c501f2c7104c21902d27988c9a754d463016d2e452 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7A9087C22D1C896B85256CC200015E5B.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA2454WE ## ADs that name it (0) None. ## Approved models (2) - The Cessna Aircraft Company 170A ([TCDS A-799](https://openairdocs.org/tcds/A-799)) - The Cessna Aircraft Company 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America 219 Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2L/5L,NE This certificate issued to: Madras Air Service Part 3 of the Civi] Aix Regulations, (see Aircraft Specification A-799) Original Product - Type Certificate Number: A-799 Make: CESSNA Model: 170A and 170B (Normal Category) Description of Type Design Change: Installation of Madras Air Service Wing Tips in accordance with Drawing No. 102, Sheet 1, Revision A, dated 12 October 1972, and Sheet 2, Revision B, dated ll July 1972. Madras Air Service FAA Approved AFM Supplement dated 2l February 1973 is required. This approval should not be extended to other specific airplanes of these models op which other previously approved modifications are incorporated unless it is xxxxxxxxx determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. Supplemental Type Certificate Addendum No. SA2454WE limits the airspeeds and is a portion of this Certificate. A copy of this Certificate and Addendum shall be maintained as part of the modified aircraft's permanent records. Date of Application: 1 June 1970 Date Reissued: Date of Issuance: 9 December 1971 Date Amended: 16 August 72 21 FEB 1973 FEDERAL AVIATION By Direction of the Administrator (Signature ) TAMINISTRANO Acting Chief Engineering & Manufacturing Branch ( Title ) **FAA FORM R110 2/10.681** 21 FEB 1973 United States of America Department of Transportation Federal Aviation Administration SIC SA2454WE Supplemental Type Certificate CESSNA Models 170A, 170B (Continuation Sheet) Number: SA21,54ME Supplemental Type Certificate ADDENDUM NO. SA2 54WE The conditions and limitations of Aircraft Specification No. A-799 apply except as follows: This Addendum, which is part of Supplemental Type Certificate No. SA2454WE, prescribes conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Civil Air regulations. A copy of this Addendum shall be maintained as part of the modified aircraft permanent records. Supplemental Type Certificate Holder: MADRAS AIR SERVICE - Model 170 Not approved for modification by this STC. II & I11: Models 170A and 170B Airspeed Limits* (Landplane) ** Maneuvering 109 MPH (95 Knots) Maximum Structural Cruising (115 Knots) Never Exceed 152 MPH (132 Knots) NOTE 1. Current Weight and Balance Report including list of equipment included in certificated empty weight, and loading instructions when necessary, must be in each aircraft at the time of original certification and all times thereafter. Refer to Aircraft Specification No. A-799, Note l The Weight and Balance Report must be revised as follows at the time of Modification: Weight of "Super Tips" 9.5 1b. total; deduct weight of the tips being removed and add the difference to the aircraft empty weight. The moment change is negligible. *These Airspeed Limitations may be used in lieu of gross weight reductions imposed by the original STC and Addendum dated 9 December 1971. ** Seaplanes modified by STC SA2454WE use Specification No. A-799 Airspeeds. **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES** ## Every issue (1) - February 21, 1973: Amended, Current. [certificate](https://openairdocs.org/files/sha256/f8/16/f816d51e5f6120d24945f6c501f2c7104c21902d27988c9a754d463016d2e452) --- 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.