# STC SR03173CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Isolair Inc., United States
- Description: Installation of Isolair Innovator 11 Model 3900-280 Spray System
- Applied: January 23, 2009
- Status date: February 6, 2025
- Product: Aircraft, Rotorcraft
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE)
- Certificate PDF: https://openairdocs.org/files/sha256/58/f4/58f4897fa53eb87f0fd37b475587763aeaaecaf1c0afefd106ad8f1bfd16f39e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143850568920250707151025.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR03173CH

## ADs that name it (0)

None.

## Approved models (5)

- The Enstrom Helicopter Corporation 280C ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation 280F ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation 280FX ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation F-28C ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation F-28F ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))

## 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.

FAA Form 8110-2 (03/21) Rotorcraft must be operated in accordance with FAA-approved Isolair, Inc. Rotorcraft Flight Manual Supplement Document No. 3900-280FMS, No Revision, dated October 1, 2012, or later FAA-approved revision. Modified rotorcraft must be maintained in accordance with Isolair, Inc. Instructions for Continued Airworthiness, ICA Manual No. 3900-2801CA, Revision B, dated August 1, 2012, or later FAA accepted revision. The installer must determine whether this design change is compatible with previously approved modifications.

If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission SR03173CH Isolair, Inc.

365 W Taft Vineland Road, Suite 100 Orlando, FL 32824 Part 6 CAR H1CE Enstrom Helicopter Corporation 280C, 280F, 280FX, F-28C, and F-28F Installation of Isolair Innovator 11 Model 3900-280 Spray System in accordance with Isolair, Inc. Installation Manual No. 3900·280INS, Revision B, dated September 5, 2012, or later Federal Aviation Administration (FAA) approved revision.

January 23, 2009 March 20, 2013; February 6, 2025 December 6, 2012 for Manager, West Certification Branch

Page 2 of 2 FAA Form 8110-2 (03/21) SR03173CH

## Every issue (3)

- February 6, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/58/f4/58f4897fa53eb87f0fd37b475587763aeaaecaf1c0afefd106ad8f1bfd16f39e)
- March 20, 2013: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/cc/7e/cc7e4e496e86bb6e23fe28db02fabad531b00cb90a9bb1d61df878f4f054cdf3)
- December 6, 2012: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/af/5d/af5da63993582a4af6012619e094448d35a0646e244f8153e7a60057924095c2)

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