# STC SA6021NM - Type: Supplemental type certificate - Status: Current, Amended - Holder: Horizon Instruments Inc, United States - Description: Installation of an electronic digital engine tachometer, Model P-1000. - Applied: January 28, 1993 - Status date: January 7, 2005 - Product: Aircraft, Single-Engine - Data sheets: [TCDS A4CE](https://openairdocs.org/tcds/A4CE) - Certificate PDF: https://openairdocs.org/files/sha256/6f/de/6fde7219f313893eee661232761c9ec407fdb1568c90ea5cdf873b34b1a84cd9 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B4D71C183CE31BB6862570C900590891.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA6021NM ## ADs that name it (0) None. ## Approved models (29) - Textron Aviation Inc. 206H ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - Textron Aviation Inc. T206H ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company 206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company P206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company P206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company P206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company P206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company P206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company P206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TP206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TP206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TP206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TP206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TP206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company TU206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) - The Cessna Aircraft Company U206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE)) ## 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. This Certificate issued to Horizon Instruments, Inc. 600 S. Jefferson St., Unit C Placentia, CA 92870 Part 3 of the Civil Air Regulations. Including Amendments 3-1 through 3-8 and Part 23.1559 of the Federal Aviation Regulations Original Product Type Certificate Number : A4CE Cessna. 206, 206H, P206, P206A, P206B, P206C, P206D, P206E, T206H,TP206A, TP206B, TP206C, TP206D, TP206E, (see continuation sheet) Description of Type Design Change : Installation of an Engine Electronic Digital Tachom eter, Horizon Model P-1000, P/N P100059- (Applicability Table on continuation sheet) in Cessna Model 206 aircraft, in accordance with Horizon Instruments, Inc. Master Drawing List No. P100059, Rev. N/C, dated January 15,1992, or later FAA approved revision. Horizon Airplane Flight Manual Supplem ent No. 1, dated May 7, 1993, or la ter approved revision is required. Limitations and Conditions : The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this in stallation and any previously approved configuration will not introduce any adverse effect upon the airwor thiness of the aircraft. The approval of this modification applies to the above noted airplane m odel series only. A copy of this STC must be included in the permanent records of the m odified aircraft. If the holder agrees to perm it 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 : January 28, 1993 Date of issuance : May 18, 1993 Date reissued : January 14, 2002 Date amended : January 7, 2005 ( Signature) Manager, Propulsion Branch Los Angeles Aircraft Certification Office ( Title) Number SA6021NM Models (continued): U206, U206A, U206B , U206C, U206D, U206E, U206F, U206G, TU206A, TU206B, TU206C, TU206D, TU206D, TU206F, TU206G Applicability Table Aircraft Model Serial Numbers Tachometer Part Number 206 All P100059-142 U206 All P100059-142 U206A All P100059-142 U206B All P100059-141 U206C All P100059-141 U206D All P100059-141 U206E All P100059-141 U206F All P100059-141 U206G All P100059-141 TU206A All P100059-142 TU206B All P100059-142 TU206C All P100059-142 TU206D All P100059-142 TU206E All P100059-142 TU206F All P100059-142 TU206G All P100059-142 P206 All P100059-142 P206A All P100059-142 P206B All P100059-142 P206C All P100059-142 P206D All P100059-142 P206E All P100059-142 TP206A All P100059-142 TP206B All P100059-142 TP206C All P100059-142 TP206D All P100059-142 TP206E All P100059-142 206H All P100059-152 T206H All P100059-153 -END- ## Every issue (1) - January 7, 2005: Amended, Current. [certificate](https://openairdocs.org/files/sha256/6f/de/6fde7219f313893eee661232761c9ec407fdb1568c90ea5cdf873b34b1a84cd9) --- 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.