STC SA3074NM

Supplemental type certificate · Preferred Improvements LLC

Holder
Preferred Improvements LLC · United States
Status
Current · Reissued
Status date
February 24, 2017
Applied
July 23, 1985
Product
Aircraft · Large Multi-Engine
Certification basis
Part 21, Part 135
Data sheet
TCDSA-669

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

This modification requires that the following two (2) placards be placed on the inside of the forward (L.H.) cargo door in full view of the cargo loading crew: MAXIMUM PAYLOAD CAPACITY -7500 lbs. or less, CARGO LOADING METHOD-Refer to FAA App Oper Handbk.

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.

Number SA3074NM Reissued on February 23, 2017, to supersede the original STC, which has been lost or misplaced.

This certificate, issued to Preferred Improvements, LLC 11234 Hackett Rd Apple Creek, OH 44606

Part * of the * Regulations.

Special Federal Aviation Regulation 38, FAR 135.1(a)(3), & FAR 135.2(d). (In addition to Aero. Bulletin 7A) Original ProductType Certificate Number: A-669 Make: McDonnell Douglas Model: DC3C-S1C3G and DC3A-S1C3G

Description of the Type Design Change: This modification requires that the following two (2) placards be placed on the inside of the forward (L. H.) cargo door in full view of the cargo loading crew:

MAXIMUM PAYLOAD CAPACITY CARGO LOADING METHOD 7500 LBS. OR LESS REFER TO FAA APPROVED

OPERATIONS HANDBOOK

Limitations and Conditions: Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

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: July 23, 1985 Date reissued: 2/23/17; 2/24/17 Date of issuance: July 24, 1985 Date amended: October 22, 1987

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

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 · 2

MakeModelData sheet
The Boeing CompanyDC3A-S1C3GA-669
The Boeing CompanyDC3C-S1C3GA-669

Every issue · 2

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

DateStatusFiles
February 24, 2017Reissued, currentCertificate
October 22, 1987Amended, earlier issueCertificate