# STC SA3786WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Navion Customs, LLC, United States
- Description: Installation of a tubular engine mount, cowling cooling baffles, air induction system, and cowl flap mechanism
- Applied: June 30, 1978
- Status date: May 30, 2014
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A-782](https://openairdocs.org/tcds/A-782)
- Certificate PDF: https://openairdocs.org/files/sha256/cd/73/cd738f4ee10f2dad2f193664ba275ab86c86933662feac475c9c0f4f3c3ca29c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/934AA125F23D611386257D32004E6CFD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3786WE

## ADs that name it (0)

None.

## Approved models (7)

- Sierra Hotel Aero Inc. Navion A (Army L-17B and L-17C) ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion B ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion D ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion E ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion F ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion G ([TCDS A-782](https://openairdocs.org/tcds/A-782))
- Sierra Hotel Aero Inc. Navion H ([TCDS A-782](https://openairdocs.org/tcds/A-782))

## 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(10-68) Page 1 of 2 N umber SA3786WE This Certificate issued to Navion Customs, LLC 7000 Merill Avenue Box 95 Chino, California 91710 Part 3* of the Civil A ir R egulations . *certification basis is set forth in Aircraft Specification A-782 Original Product Type Certificate N umber:

M ake:

M odel:

A-782

Navion

Navion A, B, D, E, F, G, H

Description of Type Design Change : Installation of a tubular engine mount, cowling cooling baffles, air induction system, and cowl flap mechanism in accordance with Gama Enterprises Modification Instructions titled, “Directors for installation of Gama Enterprises Engine Mount and Cowling Assembly for Navion Aircraft,” dated November 9, 1978.

Limitations and Conditions: The approval if this change in type design applies basically to the above -listed models only. This approval should not be extended to ot her specific airplanes of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. Continental IO-520-B or BA engine installations in accordance with Aircraft Specification A -782, Items 141 or 142 are required. 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 : June 30, 1978

Date of issuance: December 4, 1978

Date reissued: March 6 , 2013, May 30, 2014

B y direction of the A dministrator

(Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office

(Title)

Transfer the ownership of the Supplemental Type Certificate Number to (Name of transferee) (Address of transfer) (Number and street)

(City, State, and Zip code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street)

(City, State, and Zip code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (2)

- May 30, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/cd/73/cd738f4ee10f2dad2f193664ba275ab86c86933662feac475c9c0f4f3c3ca29c)
- March 6, 2013: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f2/df/f2df758fea52344e415c98f33f6fbd34d20695337561426b359bbb8cb937bcbd)

---
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.