# STC SA00877DE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Cert Works LLC, United States - Description: Installation of Cert Works Airplane Flight Manual Supplement for Opperational clarification - Applied: July 20, 2017 - Status date: May 3, 2018 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20) - Certificate PDF: https://openairdocs.org/files/sha256/f7/61/f761ca241a4cb0360504c613a907dbb83be23fc7e17f30839c3ec88e7c3cdc7a - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E25BE66B26722CF78625829F00508697.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA00877DE ## ADs that name it (0) None. ## Approved models (1) - Textron Aviation Inc. C90A ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. EDERA United States of America Department of Transportation Federal Aviation Administration PAINSTAN Supplemental Type Certificate Number: SA00877DE This certificate issued to: Cert Works, LLC 44110 East Arkansas Place Bennett, Colorado 80102 Part 23 of the Federal Aviation Regulations Original Product - Type Certificate Number: 3A2) Make Textron Aviation Model: 90A Description of Type Design Change: Installation of Cert Works Airplane Flight Manual Supplement for Operational clarification. Change consists of supplementing existing flight manual supplements for installation of Garmin GTX Transponders. FAA Approved Airplane Flight Manual Supplement, Document No. CW0715-1085, Revision IR dated 12/22-2017, FAA Approved 1/18/2018, or later FAA approved revision is required for this modification. This supplement must be attached to the POH and FAA Approved Airplane Fight Manual when the airplane is previously modified by the installation of Garnin STC SA01714WI. This Flight Manual Supplement is in addition to the Flight Manual Supplement provided by STC SA01714WL. it does not replace or supersed. 2. The installer must determine whether this design change is compatible with previously approved modifications. 3. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. (Certification Basis on page 3 of 3) Date of Application: July 20. 2017 Date Reissued: Date of Issuance: January 18.2018 Date Amended: May 3. 2018 By Direction of the Administrator Kreg R. Voorhies TENG ODA Administrator, Cert Works ODA(AIR)-833887-NM The certilicate may be transfared or made available to third persoria by kensing agreements in accordance with 14 CFR 21.47. aircreft engine. or propeller The STC'S supporting documentation tdrawinga, instructions, specifications, flight manual supplements, etc.| is the property of the STC holder The FAA will reissue the certificate in the name nf the transferee and forward it to line Transfer Endorsement Transfer the onership of Supplemental Type Certificate Number: SA00877DE To (Name and address of transferee) From (Name and address of grantor). Extem of Authority (if licensing agreement): Signature of granter 47, 115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Textron Aviation C90A Airplane Flight Manual Supplement installation is as follows: The type certification basis for Textron Aviation C90A airplanes is shown on TCDS 3A20 for parts not changed or not affected by the change. b. The certitication basis for pans changed or affected by the change since the reference date of application. June 20. 2017. is based upon CAR 3, Effective May 15, 1956, (Am. 3-1, 3-2, 3-8), CAR 3 (Amdt. 3-6); CAR 3 §3.705 (Amdt. 3-7); 14 CER Part 23 §23.1385(c) (Amdt. Original); 14 CFR Part 23 §23.959, 23.1111 and 23.1583(a) (Amdt. 23-7). 14 CFR Part 23 §23.1387(a) and 23.1387(e) (Amdt. 23-12), as detined per the TCDS. Based on 14 CFR §§ 31.115 and 21 101. and the FAA policy for significant changes in FAA Order 8110.48. the certification basis for this modification was determined to be: CAR Sections: 3,779 Amdt. CAR 3-3-6; 3.777(a) Amdt. CAR. 3-3-6 - END- 000, of imprisonment not axpeeding 3 years, or both This pertificale may be transtored or made available to third persons by licensing agreements in accordanca with 14 CFF 71 47 Prasedsion of this Supplemental Type Certificate (STC) document by persons other than the STC holder does riot constitute rights to the design dala nor to alter an aircraft, aircret engine, or propelier. The STCS supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) le the property of the STC holder An STC holder who allows a person to use the BTC to after an aircrafi. aboraft engine or propeller must provide that person with whiten permission acceptable to the FAA (Ref. 14 CFR 21.120) FAA Fom 8110-2 (5/14) Make: 3 of 3 ## Every issue (1) - May 3, 2018: Amended, Current. [certificate](https://openairdocs.org/files/sha256/f7/61/f761ca241a4cb0360504c613a907dbb83be23fc7e17f30839c3ec88e7c3cdc7a) --- 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.