# STC SA1673NM - Type: Supplemental type certificate - Status: Current, Issued - Holder: Madras Air Service, United States - Description: Installation of Demers super tips. - Applied: March 22, 1982 - Status date: July 13, 1982 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 1, Part 21 - Data sheets: [TCDS A7SO](https://openairdocs.org/tcds/A7SO) - Certificate PDF: https://openairdocs.org/files/sha256/23/ea/23eae37591f281cd1bd2b4d939ab78a3e8e71b27b24e3377c278e053f8cb0946 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FF189EA0FA0AEA7385256CC10083CE9F.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1673NM ## ADs that name it (0) None. ## Approved models (3) - Piper Aircraft Inc. PA-34-200 ([TCDS A7SO](https://openairdocs.org/tcds/A7SO)) - Piper Aircraft Inc. PA-34-200T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO)) - Piper Aircraft Inc. PA-34-220T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1673NM This certificate issued to: Madras Air Service Part 23 of the Federal Aviation Regulations. Original Product - Type bertificate Number: A7SO Make: Piper Model: PA-34-200, -200T and - 220T Description of Type Design Change: Installation of Demers Super Tips in accordance with Madras Air Service Installation Instructions for Piper PA-34 series and Aircraft Drawing, MAS 109. Limitations and Conditions: Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. Date of Application: March 22, 1982 Date Reissued: Date of Issuance: July 13, 1982 Date Amended: FEDERAL VIATION By direction of the Edm ( Signatu TOMINISTRAIO ACTING Manager, Seattle Aircraf Certification Office ( Title ) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) July 13, 1982 Number: SA1673NM Limitations and Conditions: (continued): A copy of this Certificate, Madras Air Service Installation Instructions and Drawing MAS 109, and FAA Approved Airplane Flight Manual Supplement shall be maintained as part of the permanent records for the modified aircraft. NOTE: The modified aircraft is limited to a Vne of 212 m.p.h. (IAS). - END - **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES C FAA AC 73-2651** **MADRAS AIR SERVICE** FAA APPROVED AIRPLANE FLIGHT MANUAL SUPPLEMENT TO PIPER PA 34-200, PA 34-200T, AND PA 34-220T FAA APPROVED AIRPLANE FLIGHT MANUAL The information in this document is FAA approved material which, together with the basic FAA Approved Airplane Flight Manual, is applicable and must be carried in the basic manual when the airplane is modified by the installation of Demers Super Tips in accordance with Supplemental Type Certificate SA1673NM. The information in this document supersedes the basic manual only where covered by items contained in this supplement. For Limitations, Procedures, and Performance not contained in this supplement, consult the basic manual. LIMITATIONS Vne = 212 m.p.h. (IAS) I1. PROCEDURES No change. 111. PERFORMANCE The aircraft performance with Demers Super Tips as installed by STC SA1673NM is equal to or better than the original. IV. LOADING No change. FAR APPROVED an WHAT I Acting Manager, Seattle Aircraft Certification Office DATE July 13, 1982 form has been received (14 C.F.R. 21) No certificate may be issued unless a completed application SEE REVERSE FOR FURTHER INSTRUCTIONS! 3125/82 Department of Transportation FORM APPROVED PPLICATION FOR TYPE CERTIFICATE, PRODUCTION CERTIFICATE, O.M.B. No. 04-R0078 Supplemental Type Certificate MADRAS AIR SERVIOLicant 2. Application made for - 3. Product involved 1914 N.W. DEMERS DRIVE(New Address) Type Certificate Aircraft MADRAS,OREGON 97741 Production Certificate Supplemental Type Engine Propeller Certificate 4. TYPE CERTIFICATE (Complete item 4a below) a. Model designation(s) (All models listed are to be completely described in the required technical data, including drawings representing the design, material, specifications, construction, and performance of the aircraft, aircraft engine, propeller which is the subject of this application.) 5. PRODUCTION CERTIFICATE (Complete items Sa-c below. Submit with this form, in manual form, one copy of quality control data or changes thereto covering new products, as required by applicable FAR.) a. Factory address (If different from 1 above) b. Application is for - P.C. No. | New Production Certificate | Additions to Production N/A Certificate (Give P.C. No.) e. Applicant is holder of or a licensee under a Type Certificate or a Supplemental Type Certificate (Attach evidence of licensing agreement and give certificate number) | SA549NW T.C./S.T.C. No. Supplemental Type Certificate (Complete items 6a-d below) PipeR o. Make OWNER, model designation of product to be modified ManufacturerSEN@CA-1 PA 34-200 ALLEN ABRAMOW Model (UBNA0A)2400 Southeastern Averial Number 34-725-0328 Registration Number N14BOT B. PAY Sodication Indianapolis, Ind. 46201 c. Will data be available for sale or release to other persons? d. Will parts be manufactured for sale? (Ref. FAR 21.303) YES | NO X YES _ NO -ERTIFICATION - I certify that the above statements are true. ignature of XXXXXXXXXXXXX APPLICANT OR AGEN MADRA AIR SERVICE. Leo f Denier PRES. Date 3-22-82 FAA FOrm 8110-12 (3-80) SUPERSEDES PREVIOUS EDITION **PAGE 1 OF 1 PAGES 2 TYPE INSPECTION AUTHORIZATION PROJECT NO.** SA3758NM-S _X FLIGHT | MANUFACTURING - (Routing Symbol) DATE (Routing Symbol) NAME OF APPLICANT ADDRESS (Number, street, city, state, and ZIP code) MADRAS AIR SERVICE Route 2, Box 1225; Madras, Oregon 97741 1. INSPECTION AUTHORIZED FOR AIRPLANE OTHER (Specify) NEW MODEL (Give model no.) ENGINE PROPELLER and model MODEL (Give name oforiginal manufacturer ORIGINAL T.C. DATA SHEET NO. ROTORCRAFT Piper PA 34-200 A7SO **2. CERTIFICATION BASIS N- 1480T CAR 23 S/N 34-7250328** 3. CATEGORY-FOR AIRCRAFT ONLY (Check all applicable items) OTHER (Specify) **NORMAL UTILITY ACROBATIC TRANSPORT RESTRICTED** 4. DESCRIPTION OF ALTERATION Installation of Madras Air Service Model 104 Wing Tips 5. DESIGN SPEEDS - MPH (EAS) - 6. MAXIMUM MACH NO. (DESIGN) - 7. DESIGN WEIGHTS - SEE PAGE VNE -217 MPH SEE PAGE N/A SEE PAG 4000 8. MAXIMUM OPERATING ALTITUDE (Feet) 19. MAXIMUM CABIN PRESSURE DIFFERENTIAL 10. CG. LIMITS (+86.4) to N/A N/A SEE PAGE (+94.6 L. CAXIMUM LOADS CAGE COMPARTMENTS - LOCATION AND 12. STRUCTURAL/MANEUVERING LIMITS - at 4000 1bs. **SEE PAGE SEE PAGE** 13. OPERATION LIMITATIONS ENGINE MAKE AND MODEL (FOR TURBINE ENGINE SEE PAGE ENGINE DATA SHEET NO. Lycoming LI0-360-CIE6 & 10-360-CIE6 ON SAKEOFF LOW RATIO SUPERCHARGER HIGH RATIO SUPERCHARGER MAXIMUM ALLOWABLE TEMPERATURE CYLINDER HEAD WASHER ITEM SEA LEVEL (OR COOLANT OUTLET) BAYONET (Minutes) (Feet) (Feet) (Feet) CYLINDER BASE IN. HG. OIL INLET RPM MINIMUM CARBURETOR HEAT RISE REQUIRED AT % MC POWER HP **14. PROPELLER MAKE AND MODEL DATA SHEET NO. DIAMETER HUB MODEL NO. BLADE MODEL NO.** **LIMITATIONS - SEE PAGE** 15. ROTORCRAFT MAXIMUM MINIMUM 16. INSPECTION REPORT POWER ON ROTOR LIMITS-RPM N/A 100-HOUR INSPECTION COMPLETED YES **POWER OFF ROTOR LIMITS-RPM NO** 17. EQUIPMENT LIST 18. TYPE INSPECTION REPORT IS EQUIPMENT LIST CORRECT AS YES COMPLETE APPLICABLE PORTIONS OF TYPE INSPECTION REPORT, PART 1 TO WEIGHT AND ARM OF EACH ITEM NO COMPLETE APPLICABLE PORTIONS OF TYPE INSPECTION REPORT, PART 2 EQUIPMENT YES MFGR. REPORT NO. SEE ATTACHED PAGES FOR INSTRUCTIONS LIST ATTACHED NO SEE ATTACHED PAGES FOR SPECIAL TESTS(Define divisions of responsibilities) **ORIGINATED BY CONCURRENCES** ITING SYMBOL ROUTING SYMBOL ROUTING SYMBOL INITIALS ROUTING SYMBOL INITIALS 1-1905 ANM- 190S APPROVAL DATE TITLE Chef, Aircraft Modification 3/25/82 Branch, ANM-190S RICHARD H. ULM FAA Form 8110-1 (3-66) FORMERLY FAA FORM 316 FAA AC 71-6232 0052-025-2000 **PAGE 1 OF PAGES 2 TYPE INSPECTION AUTHORIZATION PROJECT NO.** SA3758NM-S * FLIGHT (Routing Symbol) MANUFACTURING (Routing Symbol) DATE E OF APPLICANT ADDRESS (Number, st , state, and ZIP code) MADRAS AIR SERVICE Route 2, Box 1225; Madras, Oregon 97741 1. INSPECTION AUTHORIZED FOR AIRPLANE OTHER (Specify) NEW MODEL (Give model no.) ENGINE PROPELLER And model MODEL (Give name oforiginal manufacturer ORIGINAL T.C. DATA SHEET NO ROTORCRAFT Piper PA 34-200 A7SO **2. CERTIFICATION BASIS N-1480T CAR 23 S/N 34-7250328** 3. CATEGORY-FOR AIRCRAFT ONLY (Check all applicable Items) OTHER (Specify) **NORMAL UTILITY ACROBATIC TRANSPORT RESTRICTED** DESCRIPTION OF ALTERATION Installation of Madras Air Service Model 104 Wing Tips 5. DESIGN SPEEDS - MPH (EAS) - 6. MAXIMUM MACH NO. (DESIGN) - 7. DESIGN WEIGHTS - SEE PAGE VNE -217 MPR SEE PAGE - N/A SEE PAGE4000 8. MAXIMUM OPERATING ALTITUDE (Feet) 9. MAXIMUM CABIN PRESSURE DIFFERENTIAL 10. CG. LIMITS (+86.4) to N/A (P.s.I.) N/A SEE PAGE +94,6 I1. MAXIMUA LOADS SAGE COMPARTMENTS - LOCATION AND 12. STRUCTURAL/MANEUVERING LIMITS - at 4000 1bs. **SEE PAGE SEE PAGE** 13. OPERATION LIMITATIONS NE MAKE AND MODEL (FOR TURBINE ENGINE SEE PAGE ENGINE DATA SHEET NO. Lycoming LI0-360-CIE6 & 10-360-CIE6 **LOW RATIO SUPERCHARGER HIGH RATIO SUPERCHARGER MAXIMUM ALLOWABLE TEMPERATURE** N TAKEOF specify AL Specily HEIGH CYLINDER HEAD WASHER ITEM SEA LEVEL (OR COOLANT OUTLET) BAYONET (Minutes) (Feet) (Feet) (Feet) CYLINDER BASE IN. HG. OIL INLET RPM MINIMUM CARBURETOR HEAT RISE REQUIRED AT % MC POWER **14. PROPELLER MAKE AND MODEL DATA SHEET NO. DIAMETER HUB MODEL NO. BLADE MODEL NO.** **LIMITATIONS - SEE PAGE** **15. ROTORCRAFT MAXIMUM MINIMUM 16. INSPECTION REPORT** **POWER ON ROTOR LIMITS-RPM YES 100-HOUR INSPECTION COMPLETED** **POWER OFF ROTOR LIMITS-RPM NO** **17. EQUIPMENT LIST** **IS EQUIPMENT LIST CORRECT AS** **TO WEIGHT AND ARM OF EACH ITEM** 18. TYPE INSPECTION REPORT YES COMPLETE APPLICABLE PORTIONS OF TYPE INSPECTION REPORT, PART 1 NO COMPLETE APPLICABLE PORTIONS OF TYPE INSPECTION REPORT, PART 2 EQUIPMENT YES MFGR. REPORT NO. SEE A ACHED PAGES FOR INSTRUCTIONS LIST ATTACHED NO SEE ATTACHED PAGES FOR SPECIAL TESTS (Define divisions of responsibilities) **ORIGINATED BY CONCURRENCES** ROUTING SYMBOL ROUTING SYMBOL INITIALS ROUTING SYMBOL INITIALS ROUTING SYMBOL INITIALS M-190S ANM-1905 DATE 3/25/82 TITLE Chyaf, Aircraft Modification SIGNATURE RICHARD H. ULN- APPROVAL Branch, ANM-190S FAA Form 8110-1 (3-66) FORMERLY FAA FORM 316 FAA AC 71-6232 0052-025-2000 Project Mo. SA3758NM-S March 26, 1982 18. Type Inspection Report Description STC SA549NW is being amended to add the Piper PA-34-200 to the Master Eligibility List. The STC installs Madras Air Service Model 104 wing tips to various aircraft. A. Inspection and Ground Tests: AGL-218 or AGL-216 wil1 accomplish the following: 1. Conduct a Conformity Inspection to Madras Air Service Installation Instructions No. 104. 2. Ascertain that a weight and balance correction has been accomplished for the wing tip installation. 3. Obtain a Statement of Conformity, FAA Form 8130-9, from the applicant. 4. Conduct any other inspections deemed necessary. B. Flight Test: AGL-215 will accomplish the following: 1. Conduct stall checks in accordance with the Flight Test Report Guide. (CAR 3.120, 3.121, and 3.122). ~/23 SINGLE ENE) 2. Conduct flutter and vibration test to Va as per FTRG (Page 70 and 71 (attached) under CAR 3.159. 3. Conduct any other tests deemed necessary. 4. Conduct airspeed calibration In accordance with CAR 3.663. BLOCK 1. GIVE FULL NAME AND ADDRESS AND TELEPHONE OF PERSON OR COMPANY WHO WILL OWN THE SUPPLEMENTAL TYPE CERTIFICATE. IF A COMPANY, **PLEASE GIVE US A LETTER STATING WHO THE RESPONSIBLE OFFICERS** ARE AND WHO IS AUTHORIZED TO SIGN DOCUMENTS FOR THE COMPANY AND KEEP THIS LETTER UPDATED DURING OUR BUSINESS WITH YOU. NOTE: SKIP BLOCKS 4 AND GIVE COMPLETE MAKE AND MODEL INFORMATION AS KNOWN. ALSO GIVEN SERIAL NUMBER AND REGISTRATION NUMBER OF AIRCRAFT TO BE TESTED. INCLUDE NAME AND ADDRESS OF REGISTERED OWNER. (B) GIVE AS COMPLETE A DESCRIPTION OF CHANGE AS POSSIBLE INCLUDING **ENGINE AND PROPELLER MODELS (SERIAL NUMBERS OF ENGINE AND PROP** **NOT NECESSARY) IF APPLICABLE AND YOU MAY USE BACK OF THIS FORM OR EXTRA SHEETS.** (C) & (D) IF THIS STC WILL APPLY TO ONE AIRCRAFT ONLY, MARK NO IF THIS STC WILL APPLY TO MORE THAN ONE AIRCRAFT AND BE CONSIDERED A MULTIPLE, ANSWER AS APPLICABLE. SIGNATURE: MAY BE SIGNATURE OF OWNER OR AGENT TITLE: "OWNER", "AGENT", "PRES", ETC. This form may be typed or handwritten After completion, please return to: Federal Aviation Administration Modification Branch, ANW-190S **FAA BUILDING, BOEING FIELD SEATTLE, WASHINGTON 98108** ## Every issue (1) - July 13, 1982: Issued, Current. [certificate](https://openairdocs.org/files/sha256/23/ea/23eae37591f281cd1bd2b4d939ab78a3e8e71b27b24e3377c278e053f8cb0946) --- 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.