STC SA4-20

Supplemental type certificate · Jay Waldren

Holder
Jay Waldren · United States
Status
Current · Issued
Status date
February 14, 1956
Applied
January 26, 1956
Product
Aircraft · Small Airplane
Data sheet
TCDSA-717

From FAA DRS, with our copy of the certificate PDF. DRS record last changed January 29, 2026.

What it approves

Removed Howard cowling and mounting brackets and installed BT-13 cowling and mounting brackets.

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 is a scan without a text layerOpen the PDF to read it.

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
Howard Aircraft FoundationDGA-15P (Army UC-70; Navy GH-1; -2; -3; NH-1)A-717