# STC SH129WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Phoenix Air-Atlanta, United States
- Description: Installation of Chadwick C-20 auxiliary fuel system. (369HS (SN 0101 & subs), 369HE (SN 0101 & subs), 369HM (SN 0201 & subs), 369D (SN 033 & subs))
- Applied: March 5, 1971
- Status date: April 5, 2007
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/9e/5b/9e5b1d5dc45ca80916b04abfd812e0f04d7dd410c58a140e9312ed6930e49a1b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/75E186C474FC4FF0862572BA006C5BA0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH129WE

## ADs that name it (3)

- [AD 82-14-01](https://openairdocs.org/ad/82-14-01): With Chadwick C-20 Auxiliary Fuel System · Chadwick C-20 auxiliary fuel system (Phoenix Air-Atlanta STC SH129WE). Effective Jul 30, 1982. Named in the applicability
- [AD 80-08-04](https://openairdocs.org/ad/80-08-04): Auxiliary Fuel System · Chadwick C-20 auxiliary fuel system (Phoenix Air-Atlanta STC SH129WE or SH139WE). Effective Apr 17, 1980. Named in the applicability
- [AD 75-06-02](https://openairdocs.org/ad/75-06-02): Cargo Carriers · MD Helicopters 369HE, 369HM and 369HS with STC SH129WE or SH133WE. Effective Mar 28, 1975. Named in the applicability

## Approved models (4)

- MD Helicopter Inc. 369D ([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))

## 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 SH129WE

This certificate, issued to Phoenix Air-Atlanta 100 Phoenix Air Drive SW Cartersville, GA 30120

Part 6 of the Civil Air Regulations,dated December 20, 1956, Amendments 6-1 through 6-4, plus Special Conditions, dated October 2, 1962.

Original Product⎯Type Certificate Number: H3WE Make: Hughes Model: 369HE (S/N 0101 & Subs), 369HS (S/N 0101 & Subs) 369HM (S/N 0201 & Subs), 369D (S/N 003 & Subs)

Description of the Type Design Change: Installation of Chadwick C-20 Auxiliary Fuel System in accordance with FAA sealed Chadwick Incorporated Drawing List 20-500-DP-07, Revision I, dated August 29, 1980, or later FAA approved revision, and Installation Instructions No. 20-500-DP-02, Revision E, dated April 24, 1980, or later FAA approved revision.

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 these models on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those previously approved modification, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this Certificate and FAA Approved Rotorcraft Flight Manual Supplement dated July 19, 1977, or later FAA approved revision, 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.

Date of application: March 5, 1971 Date reissued: 02/18/87; 03/24/93; 04/05/07 Date of issuance: August 11, 1971 Date amended: 5/22/72; 7/19/77; 3/24/93; 05/10/00

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- April 5, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/9e/5b/9e5b1d5dc45ca80916b04abfd812e0f04d7dd410c58a140e9312ed6930e49a1b)

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