# STC SH3339NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Isolair Inc., United States - Description: Installation of an Isolair Model3700 Spray Tank System - Applied: July 28, 1984 - Status date: October 20, 1993 - Product: Aircraft, Rotorcraft - Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) - Certificate PDF: https://openairdocs.org/files/sha256/b1/44/b144983166e714fb6173eaaa7b6fd570b6bae089cab4bcc580658963c041626f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137673680420250703153413.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SH3339NM ## ADs that name it (0) None. ## Approved models (9) - MD Helicopter Inc. 369D ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369E ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369F ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369FF ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369HE ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369HM ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 369HS ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) - MD Helicopter Inc. 500N ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) ## 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) Approval of this change in type design applies only to those basic MD Helicopters, LLC models referenced above that are equipped with either Hughes Jackpoint Doublers P/N 369H90017-19 or Isolair Stiffeners P/N 3700-19. This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. Rotorcraft equipped with this spray system must be operated in accordance with Isolair Rotorcraft Flight Manual Supplement, dated September 9, 1993, or later FAA approved revision. A copy of Supplemental Type Certificate Number SH3339NM, Continuation Sheet and Rotorcraft Flight Manual Supplement must be carried in the modified rotorcraft at all times. 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. SH3339NM Isolair, Inc. 365 W Taft Vineland Road, Suite 100 Orlando, FL 32824 Part 6 CAR H3WE MD Helicopters, LLC 369H, 369HM, 369HS, 369HE, 369D, 369E, 369F, 369FF and 500N Restricted Category Installation of an Isolair Model 3700 Spray Tank System in accordance with FAA sealed copies of Isolair Installation Instructions Number 3724-1, pages 1 through 15, dated January 29, 1986, and Drawing List Report Number 3724, pages 1 through 4, dated March 13, 1986, or later FAA approved revisions. July 28, 1984 February 6, 2025 March 19, 1986 4/25/1986; 5/30/1986; 2/19/1993; 10/20/1993 for Manager, West Certification Branch Page 2 of 2 FAA Form 8110-2 (03/21) SH3339NM ## Every issue (2) - October 20, 1993: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b1/44/b144983166e714fb6173eaaa7b6fd570b6bae089cab4bcc580658963c041626f) - October 20, 1993: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/d2/59/d25932c1d4e56a718a9fefd34ccdd5dceb76dbe91f5eee4a73b71e2297910359) --- 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.