# STC SH1938SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Utilities Services of America, United States
- Description: :  Installation of an airborne high pressure water washing system in accordance with FAA Approved: Master Data List, Rotorcraft Flight Manual Supplement, and Instructions for Continued Airworthiness as appears on AML SH1938SO dated December 02, 2011 or later FAA Approved Revision.
- Applied: June 27, 1985
- Status date: December 2, 2011
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/ed/1d/ed1dc916af1eba938e7b7ec6300818fe07e6124a3c71c9a7242a2d8181919cd5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/647E1B13D342DB658625796B00593A8C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH1938SO

## ADs that name it (0)

None.

## Approved models (2)

- Bell Helicopter Textron (Canada) 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron (Canada) 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))

## 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.

Number SH1938SO

This Certificate issued to

Part * of the * Regulations.

Description of Type Design Change: Installation of an airborne high pressure water washing system in accordance with FAA Approved: Master Data List, Rotorcraft Flight Manual Supplement, and Instructions for Continued Airworthiness as appears on AML SH1938SO dated December 02, 2011 or later FAA Approved Revision.

Limitations and Conditions: * See AML for additional Limitations and Conditions

The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. The approval of this modification applies to the above noted aircraft model series only. 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.

USA Airmobile Inc.

4101 SW 47th Ave. Suite 106 Fort Lauderdale, FL 33314 See attached FAA Approved Model List (AML) No. SH1938SO for a list of approved rotorcraft models and applicable airworthiness regulations * *

Date of application : June 27, 1985

Date of issuance : May 28, 1986

Date reissued : December 24, 1998

Date amended : June 22, 1987; April 26, 1988 May 26, 1988; December 02, 2011

( Signature) Manager, Airframe Branch Los Angeles Aircraft Certification Office

( Title)

## Every issue (1)

- December 2, 2011: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ed/1d/ed1dc916af1eba938e7b7ec6300818fe07e6124a3c71c9a7242a2d8181919cd5)

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