# STC ST00106AT - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Purlator Facet, Inc, United States - Description: Installation of a replacement coalescer filter, Greentree Aerotech, Inc. (GAI) P/N 21BC103. - Applied: October 8, 1992 - Status date: November 20, 2017 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA) - Certificate PDF: https://openairdocs.org/files/sha256/84/be/84be6056123a8ed3054d17ce42ac9395c94f1fc35ad795407981d0e8aa0ed31f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B0ADC7A4E4DBF92D862581E70056EAB5.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST00106AT ## ADs that name it (0) None. ## Approved models (1) - Gulfstream Aerospace Corporation G-IV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) ## 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. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder. FAA Form 8110-2 (5/14) Page 1 of 2 Number: ST00106AT This certificate issued to: Purolator Facet, Inc. 8439 Triad Drive Greensboro, NC 27409 Part 25 of the Federal Aviation Regulations. Original Product – Type Certificate Number: A12EA Make: Gulfstream Aerospace Model: G-IV Description of Type Design Change: Installation of a replacement coalesce filter, Greentree Aerotech, Inc., (GAI) P/N 21BC103, as shown on Drawing No. 21BC103, Rev. “C”, dated 09/10/92, or later FAA Approved revision on a Garrett Airesearch Manufacturing Company Separator Assembly (P/N 2340186-2) of the air conditioning system in accordance with GAI Drawing List DL-21BC103, Rev A. dated 09/10/92, or later FAA Approved Revision. Limitations and Conditions: This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that airplane. Date of Application: October 08, 1992 Date Reissued: October 10, 1996, November 20, 2017 Date of Issuance: February 08, 1993 Date Amended: Signature Title (for) Christina M. Underwood Manager, Atlanta ACO Branch FAA Form 8110-2 (5/14) Page 2 of 2 Transfer the ownership of Supplemental Type Certificate Number: ST00106AT To (Name and address of transferee) From (Name and address of grantor) ## Every issue (1) - November 20, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/84/be/84be6056123a8ed3054d17ce42ac9395c94f1fc35ad795407981d0e8aa0ed31f) --- 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.