# STC SA2681NM - Type: Supplemental type certificate - Status: Current, Amended - Holder: Machen Inc, United States - Description: Installation of a wastegate actuator drain line on Continental TSIO-520 series engine on Cessna 206, 207, and 210 series aircraft. - Applied: November 4, 1984 - Status date: November 1, 1998 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21), [TCDS A16CE](https://openairdocs.org/tcds/A16CE), [TCDS A4CE](https://openairdocs.org/tcds/A4CE) - Certificate PDF: https://openairdocs.org/files/sha256/8d/9e/8d9edb18608e30deb090dd00d47542165c7a2999c322927628dfea772d6e9787 - Approved model list and other attachments: [AML SA2681NM.pdf](https://openairdocs.org/files/sha256/a2/23/a223fae232695d1bdd9f65daaab5f884c3809e847163a3208ac49fe221cc7d19) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CAF26BED919E2A8585256CC20008C742.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2681NM ## ADs that name it (0) None. ## Approved models (24) - Cessna Aircraft Company P210N ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company P210R ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T207 ([TCDS A16CE](https://openairdocs.org/tcds/A16CE)) - Cessna Aircraft Company T207A ([TCDS A16CE](https://openairdocs.org/tcds/A16CE)) - Cessna Aircraft Company T210F ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210L ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210M ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company T210N ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Cessna Aircraft Company TP206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TP206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TP206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TP206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TP206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Cessna Aircraft Company TU206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. Butta States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2681NM This certificate issued to: Machen, Inc. 10555 Airport Drive Coeur d'Alene Airport Hayden Lake, ID 83835 Part " of the * Regulations. Original Product -Type Certificate Number: *See attached Approved Model List (AML) Make: No. SA2681NM for list of approved aircraft models Model: and applicable airworthiness regulations Description of Type Design Change: Installation of a wastegate actuator drain line on Continental TSIO-520 series engine on Cessna 206, 207, and 210 series aircraft in accordance with Machen, Inc. Report No. 86-2, dated October 1984, or later FAA approved revision. NOTE: This STC applies only to those aircraft with Continental TSIO-520 engines modified by STC SE2680NM. Limitations and Conditions: Approval of this change in type design applies 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 relationship 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. A copy of this Certificate and AML must be maintained as part of the permanent records for the modified aircraft. 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. Date of Application: November 4, 1984 Date Reissued: Date of Issuance: December 5, 1984 Date Amended: February 6, 1985, November 1, 1998 FEDERAL AVIATION he oddminist rator doesn (Signature) TOMMIST RATION Acting Manager, Seattle Aircraft Certification Office (Title) ### AML SA2681NM.pdf This is OCR from the scanned FAA attachment. OCR can misread letters and numbers. **FAA APPROVED MASTER ELIGIBILITY LIST (MEL) SA2681NM MACHEN INC.** FOR INSTALLATION OF A WASTEGATE ACTUATOR OIL DRAIN LINE Original Issue: 12/05/84 **ITEM AIRCRAFT AIRCRAFT TYPE CERTIFICATION FAA SEALED AFM MEL** MAKE MODEL CERTIFICATE BASIS DRAWING LIST SUPPLEMENT REVISION NUMBER FOR NO. AND DATE DATE ALTERATION NUMBER REV Cessna TU206 A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release 2. Cessna TU206A A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR23 86-10001 N/C Release Cessna TU206B A4CE CAR Part 3 - 86-10000 N/C. N/A Initial FAR 23 86-10001 N/C Release Cessna TU206C A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release Cessna TU206D A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release Cessna TU206E A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release 7. Cessna TU206F A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release Cessna TU206G A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release Cessna TP206C A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release 10. Cessna TP206D A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release 11. Cessna TP206E A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release Page 1 of 3 **FAA APPROVED MASTER ELIGIBILITY LIST (MEL) SA2681NM MACHEN INC.** FOR INSTALLATION OF A WASTEGATE ACTUATOR OIL DRAIN LINE Original Issue: 12/05/84 **ITEM AIRCRAFT AIRCRAFT TYPE CERTIFICATION FAA SEALED AFM MEL** MAKE MODEL CERTIFICATE BASIS DRAWING LIST SUPPLEMENT REVISION NUMBER FOR NO. AND DATE DATE **ALTERATION NUMBER REV** 12. Cessna TP206A A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release 13. Cessna TP206B A4CE CAR Part 3 - 86-10000 N/C N/A Initial FAR 23 86-10001 N/C Release 14. Cessna T207 A16CE FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 15. Cessna T207A A16CE FAR Part 23 86-10000 N/C N/A 8/1/95 86-10001 N/C 16. Cessna T210 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 17. Cessna T210F 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 18. Cessna T210G 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 19. Cessna T210H 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 20. Cessna T210J 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 21. Cessna T210K 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 22. Cessna T210L 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release Page 2 of 3 **FAA APPROVED MASTER ELIGIBILITY LIST (MEL) SA2681NM MACHEN INC.** FOR INSTALLATION OF A WASTEGATE ACTUATOR OIL DRAIN LINE Original Issue: 12/05/84 **ITEM AIRCRAFT AIRCRAFT TYPE CERTIFICATION FAA SEALED AFM MEL** MAKE MODEL CERTIFICATE BASIS DRAWING LIST SUPPLEMENT REVISION NUMBER FOR NO. AND DATE DATE **ALTERATION NUMBER REV** 23. Cessna T210M 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 24. Cessna P210N 3A21 FAR Part 23 86-10000 N/C N/A Initial 86-10001 N/C Release 25. Cessna T210N 3A21 FAR Part 23 86-10000 N/C N/A 8/1/95 86-10001 N/C 26. Cessna P210R 3A21 FAR Part 23 86-10000 N/C N/A 8/1/95 86-10001 N/C FAA Approved: 20157 Manager, Special Certification Branch Seattle Aircraft Certification Office Issued: 12/05/84 Amended: 02/06/85; 11/01/98 Page 3 of 3 ## Every issue (1) - November 1, 1998: Amended, Current. [certificate](https://openairdocs.org/files/sha256/8d/9e/8d9edb18608e30deb090dd00d47542165c7a2999c322927628dfea772d6e9787), [AML SA2681NM.pdf](https://openairdocs.org/files/sha256/a2/23/a223fae232695d1bdd9f65daaab5f884c3809e847163a3208ac49fe221cc7d19) --- 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.