# STC SA3749WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Boeing Company, United States
- Description: Conversion of passenger airplane to cargo only configuration by installation of cargo door, cargo floor, and increasing maximum landing and zero fuel weight.
- Applied: August 23, 1978
- Status date: September 7, 2010
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/62/09/6209e1d6aa42276987e5d430b3bf1407c874fd0546ef6a0b43f3aecb50c03240
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7C8C2BF59621D458862577E3007F1035.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3749WE

## ADs that name it (2)

- [AD 2006-03-04](https://openairdocs.org/ad/2006-03-04): Main cabin cargo door · Boeing DC-8-33, DC-8-51, DC-8-53 and 11 more. Effective Mar 13, 2006. Cited in the text
- [AD 89-17-01 R1](https://openairdocs.org/ad/89-17-01-R1): Main Cargo Door · Conversion of passenger airplane to cargo only configuration (Boeing STC SA3403WE or SA3749WE). Effective Apr 13, 1990. Named in the applicability

## Approved models (1)

- The Boeing Company DC-8-43 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA3749WE This certificate issued to: The Boeing Company 4000 Lakewood Boulevard Long Beach, California 90808 Part H of the Civil Air Poegulations.

Original Product Type Certificate Number: 4A25 Make: Boeing Model: DC-8-43 Description of Type Design Change: Conversion of passenger airplane to cargo only configuration by installation of cargo door, cargo floor, and increasing maximum landing and zero fuel weight in accordance with FAA sealed Douglas Dwg. No. 7633870, Rev. "D" or later sealed revision. Douglas Airplane Flight Manual Supplement dated September 28, 1978, or later FAA approved date, to AFM SM-23890 is required Limitations and Conditions: The approval of this change in type design applies to DC-8-43 airplanes 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 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 the aircraft. This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage. 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: August 23, 1978 Date Reissued: September 7, 2010 Date of Tismance: September 28, 1978 Date Amended:

By Direction of the Administrator FEDERAL AVIATION Supervisor, Technical and Administrative Support Staff TOMINSTRATOR Los Angeles Aircraft Certification Office (Title)

TRANSFER ENDORSEMENT 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):

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA3749WE Issued: September 28, 1978 Description of Type Design Change: Continued:

The following data is the only change to that in Section IX - Model DC-8-43, in Type Certificate Data Sheet 4A25.

Airspeed Limits (IAS) Vmo (Maximum operating - S.L.) 340K Vmo (** " - 10,000 ft..) 352K* Vmo (" " - 27,000 ft..) 352K* Vmo (" " - 29,300 ft..) 342K* (M=0.88) Vmo (** " - 42,000 ft..) 258K* (M=0.88) Vmo *Straight line variation between values shown.

C. G. Range Fwd. Limit Sta. 845.4 (17.5%) Aft. Limit Sta. 884.0 (32.0%) Maximum Weights Zero Fuel 203,000 Ibs.

Landing 217,000 Ibs.

- END -

47.

## Every issue (1)

- September 7, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/62/09/6209e1d6aa42276987e5d430b3bf1407c874fd0546ef6a0b43f3aecb50c03240)

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