# STC SA722GL - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Airwolf Filter Corp - Description: Installation of Model 200 scavenge oil filter system in Air Tractor AT-301 aircraft with Pratt & Whitney R-1340 engine. - Status date: May 1, 2018 - Data sheets: A9SW - Certificate PDF: https://openairdocs.org/files/sha256/1f/55/1f55d69ac087a6be2c001ca0d16e65526ab66f165f77707fa1fb70bf0900625d - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/16D047BF4BA03B588625829F004B08A9.0001 - Page: https://openairdocs.org/stc/SA722GL ## ADs that name it None. ## Approved models (1) - Air Tractor Inc. AT-301 (TCDS A9SW) ## 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. 21 Federal Aviation (See Type Certificate Data Sheet No. A9SW for complete certification basis) Installation of Model 200 scavenge oil Filter system in Air Tractor AT-301 aircraft with Pratt & Whitney R1340 engine in accordance with Great Lakes Ag-Cat, Inc. Drawing List dated April 18, 1983, and Installation Instructions dated April 18, 1983, or later FAA approved revisions. This approval should not be extended to other aircraft of these models 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 introduce no adverse effect upon the airworthiness of these aircraft. Airwolf Filter Corp. 12801 Hwy 75 North Okmulgee, OK 74447 A9SW Air Tractor AT-301 August 25, 1987; March 9, 2018; May 1, 2018 (Signature) Roy E. Boffo Manager, Propulsion and Project Management Section Chicago ACO Branch (Title) April 18, 1983 January 17, 1984 ## Every issue (2) - May 1, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1f/55/1f55d69ac087a6be2c001ca0d16e65526ab66f165f77707fa1fb70bf0900625d) - March 9, 2018: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/2c/a9/2ca923715f28fa007fc9b25f87eead998ecef5f5d753532b4d0bc064a55fc04b) --- From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.