What it approves
Installation of short engine exhaust stacks.
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.
United States of amenta Bepartrnent of transportation —iederal aviation administration oipplemental t^pe Certificate isKwm<v€41' ST746SO Tradewinds Aircraft Supply, Inc 11550 North Loop Road San Antonio, Texas 78216 ^ : 669 . McDonnell Douglas i&J: DC- 3 Series Installation of short engine exhaust stacks in accordance with R.W.D Inc. Drawing Number RWD 7401 Change A.
This installation eligible only on DC-3 series airplanes equipped with P&W R-1830 engines and Douglas P/N 5115224 exhaust collector rings. Airworthiness compatibility of this STC with all other major changes to the standard original model(s) shown above should be confirmed prior to installation of this STC.
//J^/<^^ September 20, 1974 -A^~^~/. April 7, 1989 January 8, 1975 tager, A^Tan't»/Aircraft Certification Office
'Ihis ctrtificate may be Iransjrrrfd in accurdatu'e with FAR 21.•//.
FAAFOIM 81 10-2(10-68)
INSTRUCTIONS : The transfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of this Supplemental Type Certificate.
The FAA will reissue the certificate In the name of the transferre and forward it to him.
TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (9{ame of transferee.)
(Address of transferee) (9{um6er ami street) (City, State, mdZlf ux{e) from(%(ame of grantor) (Print or type) _ (Address of grantor) ___ (Stonier ami street) (City, State, andZlf code) Exent of Authority (if licensing agreement) :
Signature of grantor (In Page 2 of 2
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 10
| Make | Model | Data sheet |
|---|---|---|
| The Boeing Company | DC3A-S1C3G | A-669 |
| The Boeing Company | DC3A-S1CG | A-669 |
| The Boeing Company | DC3A-S4C4G | A-669 |
| The Boeing Company | DC3A-SC3G | A-669 |
| The Boeing Company | DC3A-SCG | A-669 |
| The Boeing Company | DC3C-R-1830-90C | A-669 |
| The Boeing Company | DC3C-S1C3G | A-669 |
| The Boeing Company | DC3C-S4C4G | A-669 |
| The Boeing Company | DC3C-SC3G | A-669 |
| The Boeing Company | DC3D-R-1830-90C | A-669 |