# STC SA01281CH

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Johnson Airspray Inc., United States
- Description: Installation of turbine engine and a propeller and optional instrument panel
- Applied: August 17, 1999
- Status date: May 29, 2012
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A17SW](https://openairdocs.org/tcds/A17SW)
- Certificate PDF: https://openairdocs.org/files/sha256/97/c3/97c3b1fcdb247f2bd983cc1c57519080bff0eed0ee5bf72415f9b0d4d271c1f3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4569F7B130D33A8486257A1700663DEE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA01281CH

## ADs that name it (0)

None.

## Approved models (3)

- Air Tractor Inc. AT-401 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW))
- Air Tractor Inc. AT-502 ([TCDS A17SW](https://openairdocs.org/tcds/A17SW))
- Air Tractor Inc. AT-502B ([TCDS A17SW](https://openairdocs.org/tcds/A17SW))

## 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.

Part 8 of the CAM Regulations. See Type Certificate Data Sheet A17SW for the complete certification basis.

For Air Tractor Model AT-401, installation of the GE Aviation Czech s.r.o, M601E-11 turbine engine with an Avia Propeller V510, V510AG or V508E-AG and optional instrument panel in accordance with Johnson Airspray, Inc. Master Drawing List, Document No. MDL2000-AT, Revision B dated March 7, 2005 or later FAA approved revision. For Air Tractor AT-502 & AT-502B models, installation of the GE Aviation Czech

s.r.o, M601E-11 turbine engine with an Avia Propeller V508E-AG and optional instrument panel in accordance with Johnson Airspray, Inc. Master Drawing List, Document No. MDL2010-AT, Revision IR, Dated April 11, 2011, or later FAA approved revision.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

Johnson Airspray, Inc.

Airport Road P.O. Box 27 Argyle, MN 56713 A17SW Make : Air Tractor, Inc.

AT-401, AT-502, AT-502B Date of application : August 17, 1999

Date of issuance : August 4, 2000

Date amended : November 14, 2002; January 23, 2006, May 29, 2012

By direction of the Administrator Original Signed By:

Timothy Smyth

( Signature) Timothy Smyth Manager, Propulsion Branch Chicago Aircraft Certification Office

(Title)

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

Number SA01281CH Date Amended: November 14, 2002; January 23, 2006; May 29, 2012

2. FAA Approved Airplane Flight Manual Supplement (AFMS) for the Air Tractor AT-401 Document No.

AFM-2000-AT401, Rev C, dated February 2, 2006, or later FAA approved revision is required.

FAA Approved AFMS for the Air Tractor Models AT-502 & AT-502B, Document No.

AFM-2010-AT502, Rev IR dated May 9, 2012 or later FAA approved revision is required.

3. The life limit for the AVIA Propeller Ltd. Propeller Model (VJ8.510 or VJ8.510AG and V508E-AG) in accordance with Type Certificate Data Sheet Number P2BO and P21BO respectively, and as referenced in AVIA Maintenance Manual, is 6,000 flight hours.

4. Power lever positions below flight idle (Beta range) when the aircraft is in flight can result in severe overspeeding and/or loss of aircraft control.

5. Limits for the GE Aviation Czech s.r.o, M601E-11 turbine engine and Avia Propeller Model V510 and V510AG are as published in the FAA approved AFMS for the Air Tractor model AT-401 modified in accordance with this STC. Limits for the GE Aviation Czech s.r.o, M601E-11 turbine engine and Avia Propeller Model V508-AG are as published in the FAA AFMS for the Air Tractor Models AT-401, AT-502, and AT-502B modified in accordance with this STC

6. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

----------------------------------------------------------End--------------------------------------------------------

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

Number

## Every issue (1)

- May 29, 2012: Amended, Current. [certificate](https://openairdocs.org/files/sha256/97/c3/97c3b1fcdb247f2bd983cc1c57519080bff0eed0ee5bf72415f9b0d4d271c1f3)

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