STC SA3-15

Supplemental type certificate · Preferred Improvements LLC

Holder
Preferred Improvements LLC · United States
Status
Current · Reissued
Status date
December 13, 2017
Applied
December 5, 1956
Product
Aircraft · Large Airplane
Certification basis
Part 21

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 5, 2025.

What it approves

Installation of wheel well enclosure doors.

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.

Preferred Improvements, LLC 11234 Hackett Road Apple Creek, OH 44606

4b Civil Air .

- A-618 & A-669 Douglas DC-3 All Models

Installation of Wheel Well Enclosure Doors. Data required: Remmert-Werner Drawing No’s. SK-106162-00 Rev. D, SK-10162-04 Rev. A, SK-10162-05 Rev. C, SK-10162-06, SK-10162-07, SK-10184-00 Rev. A, and SK-10184-01 Rev. A (2 sheets), or later FAA Approved revision and associated Airplane Flight Manual revision.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

10/1/70; 3/25/81; 6/30/83; 3/7/14; 12/5/17;

12/13/17

8/22/57; 3/14/58; 4/2/58; 3/5/59; 12/4/59; 2/24/60

Original signed by Grant Youngdahl (Signature) Grant E. Youngdahl Program Manager Wichita ACO Branch (Title)

December 5, 1956 July 23, 1957

FAA FORM 8110-2-1(10-69) PAGE 2 of 3 PAGES

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee) (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)

Signature of grantor (in ink):

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

-- SA3-15

Date Reissued: 10/1/70; 3/25/81; 3/7/14; 12/5/17; 12/13/17 Date Amended: 8/22/57; 3/14/58; 4/2/58; 3/5/59; 12/4/59; 2/24/60

(Continued from Page 1)

The following Douglas DC-3 engine and gross weight combinations are approved for this modification with the appropriate CAA approved airplane:

Engine T.O.

BHP M.E.T.O.

BHP T.O.

Gross Wt.

Landing Gross Wt.

CAA Approved Airplane Manual Rev. Date P&W R-1830-94

1350 1100 26,200 26,000 6/25/57 P&W R-1830-94

1200 1100 26,200 26,000 6/25/57 P&W R-1830-92

1200 1050 26,200 25,200 6/25/57 P&W R-1830-92

1200 1050 26,200 26,000 4/1/57 P&W R-1830-90D

1200 1050 26,200 26,000 6/25/57 P&W R-1830-90D

1200 1050 26,200 25,200 2/24/58 P&W R-1830-94

1350 1100 26,200 25,200 12/17/57 P&W R-1830-75

1350 1100 26,200 25,200 1/10/58 P&W R-1830-75

1350 1100 26,200 26,000 1/13/58 P&W R-1830-75

1200 1050 26,200 25,200 1/8/58 W R-1820-56-AM2

1200 1100 26,200 25,200 1/14/58 W R-1820-60, -71 (G202A)

1200 1100 26,200 25,200 10/17/58 P&W R-1830-94

1200 1100 26,200 25,200 1/7/58 P&W R-1830-75 1200 1050 26,200 26,000 12/13/57

Approved March 25, 1981

--- END ---

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 · 14

MakeModelData sheet
The Boeing CompanyDC3-G102A-618
The Boeing CompanyDC3-G102AA-618
The Boeing CompanyDC3-G103AA-618
The Boeing CompanyDC3-G202AA-618
The Boeing CompanyDC3A-S1C3GA-669
The Boeing CompanyDC3A-S1CGA-669
The Boeing CompanyDC3A-S4C4GA-669
The Boeing CompanyDC3A-SC3GA-669
The Boeing CompanyDC3A-SCGA-669
The Boeing CompanyDC3C-R-1830-90CA-669
The Boeing CompanyDC3C-S1C3GA-669
The Boeing CompanyDC3C-S4C4GA-669
The Boeing CompanyDC3C-SC3GA-669
The Boeing CompanyDC3D-R-1830-90CA-669

Every issue · 2

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
December 13, 2017Reissued, currentCertificate
March 7, 2014Reissued, earlier issueCertificate