# STC SA00570WI

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Compro Aviation Inc
- Description: Installation of a Compro Aviation Driftfinder DFS-10 system which injects oil into engine exhaust to produce smoke that determines wind speed and direction.
- Status date: September 4, 1997
- Data sheets: A19SW, A19SW, A19SW
- Certificate PDF: https://openairdocs.org/files/sha256/e7/34/e734201b33fa004ca1e83f4bfc476040fdc6eee2181f988e50c860e0e70dc301
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/22D5CA82A3EC6372862570C2005BFAD8.0001
- Page: https://openairdocs.org/stc/SA00570WI

## ADs that name it

None.

## Approved models (3)

- Air Tractor Inc. AT-602 (TCDS A19SW)
- Air Tractor Inc. AT-802 (TCDS A19SW)
- Air Tractor Inc. AT-802A (TCDS A19SW)

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (2)

- September 4, 1997: Issued, Current. [certificate](https://openairdocs.org/files/sha256/e7/34/e734201b33fa004ca1e83f4bfc476040fdc6eee2181f988e50c860e0e70dc301)
- September 4, 1997: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/e7/34/e734201b33fa004ca1e83f4bfc476040fdc6eee2181f988e50c860e0e70dc301)

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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.