# STC ST00013WI-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Duncan Aviation Inc, United States - Description: Installation of a modified engine bleed air mixing valve regulated air source. - Applied: August 24, 1992 - Status date: April 5, 2010 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) - Certificate PDF: https://openairdocs.org/files/sha256/4e/9a/4e9ad8cf1f8c27f25642d8850a1272998b704f86f72906df033d35ebbf2306da - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1A3B4648F625DFC08625773B0065BA8B.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/ST00013WI-D ## ADs that name it (0) None. ## Approved models (7) - Learjet Inc. 35 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 35A (C-21A) ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 36 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 36A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 55 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 55B ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 55C ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) ## 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 570013W1-D This certifirate ined lo Duncan Aviation, Inc. 3701 Aviation Road Lincoln, NE 68524 Certifies that the change in the type design for the following produc with the limitations and cornditions therefere as specified hercen mech to viruertlincio requirevento /Purt 25 o/ the Federal Aviation Pongulations. Original Product -• Type Certificate Number: AIOCE Mutie: Learjet Model: 35, 35A, 36, 36A, 55, 55B, 55C Description of Type Design Change: Installation of a modified engine bleed air mixing valve regulated air source. Sulalid and Sendition: The modification must be installed in accordance with Duncan Aviation Document List Number 10040400, FAA Approved December 23, 1992, or later FAA approved revision. Compatibility of this design change with previously approved modifications must be determined by the installer. suspended, reucked er a ternation date is othere ise caballished by the Audinistrator of the Federal Amialion •Arduvinistration Date of Application: August 24, 1992 Date Reissued: April 5,2010 Tute. o/ issuancs: December 23. 1992 Tale unended: August 2, 1994 FEDERAL AVIATION (Signature) * P. Mike Chick, Jr. TOMINISTRATO ODA administrator, ODA-501013-CE Duncan Aviation, Lincoln, Nebraska (Title) Any alteration of thir cel not exceeding $1,000, e: imprisonment not ex 3 Vears. o: botr BAR FORN 8110-2110-687 PAGE ## Every issue (1) - April 5, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4e/9a/4e9ad8cf1f8c27f25642d8850a1272998b704f86f72906df033d35ebbf2306da) --- 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.