# STC SA3185WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Consulting Aerospace Engineers Inc, United States
- Description: New enlarged 12 ft cargo door, new cargo floor, structural cargo crash barrier, mod FS 260 bulkhead, relocated main elec junction box, partially new DC elec distribution and control system, DC-6 wheels and brakes, misc changes for cargo operations.
- Applied: November 12, 1973
- Status date: May 28, 1980
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-762](https://openairdocs.org/tcds/A-762)
- Certificate PDF: https://openairdocs.org/files/sha256/df/b9/dfb9eb1e61a473c92cc0c8bdf7a87681ecfb5e5c779f99fc6122621d0418c821
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/48E3D70B5FD88C0185256CC2000A94F3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3185WE

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company C54B-DC ([TCDS A-762](https://openairdocs.org/tcds/A-762))

## What the certificate says

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

8103 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A3185WE This certificate issued to: Consulting Aerospace Engineers, Inc.

3710 Artesia Blvd.

Fullerton, CA 92833

(714) 562-5700 Part L2 & Lb of the CIVII AIr Regulalions; L4a of November 1, 1943 and 4b of November 9, 1945.

Original Product - Type bertificate Number: A-762 Make: McDonnell Douglas Model: C54B-DC Description of Type Design Change: New enlarged 12 It. cargo door, new cargo 11007, structural cargo crash barrier, modified F.S. 260 bulkhead, relocated main electrical junction box, partially new D.C. electrical distribution and control system, DC-6 wheels and brakes and several miscellaneous changes for cargo operations in accordance with FAA sealed MDL ADI 9009M Revision M, Loading Schedule SFO 2-5 Revision E, and FAA Approved ADI Airplane Flight Manual Revision 1 dated May 7, 1976, or later FAA Approved revisions.

Limitalins and bendilions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation made in McDonnell Douglas C54B-DC Serial No. 18375 only. Use of Loading Schedule SFO 2-5 is limited to bulk cargo loading only.

## Every issue (1)

- May 28, 1980: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/df/b9/dfb9eb1e61a473c92cc0c8bdf7a87681ecfb5e5c779f99fc6122621d0418c821)

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