STC SH298NW

Supplemental type certificate · Siam Hiller Holdings Inc

Holder
Siam Hiller Holdings Inc · United States
Status
Current · Reissued
Status date
August 19, 2005
Applied
March 11, 1976
Product
Aircraft · Rotorcraft
Certification basis
Part 21
Data sheet
TCDS4H11

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Installation and maintenance of a cabin heater system. (UH-12E modified per STC SH178WE)

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

This Certificate issued to Siam Hiller Holdings, Inc.

925 M Street Firebaugh, California 93622 Part 6 of the Civil Air Regulations. including Amendments 6-1 thru 6-3.

4H11 Hiller UH-12E Description of Type Design Change: Installation and maintenance of a cabin heater system in accordance with FAA approved Soloy Conversions, Ltd. Drawing List 560-301 dated May 14, 1976, or later FAA approved revision. The cabin heater assembly and related brackets must be visually inspected prior to each flight as part of the normal rotorcraft preflight inspection procedure. Refer to the applicable portions of Soloy Conversions, Ltd. Maintenance Manual for the required maintenance of this assembly.

NOTE: Only those Hiller UH-12E rotorcraft which have been converted to turbine power in accordance with STC SH178WE are eligible for this modification.

Limitations and Conditions: Approval of this change in type design applies to the above model rotorcraft only. This approval should not be extended to other rotorcraft of this model 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 will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this Certificate must be maintained as part of the permanent records for the modified rotorcraft. 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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: March 11, 1976

Date of issuance: May 19, 1976

Date reissued: 06/02/83; 10/25/84; 05/28/91;

11/30/95; 08/19/05

Date amended: 05/28/91

( Signature) Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 1

MakeModelData sheet
Rogerson Hiller CorporationUH-12E4H11