# STC SA1798SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aeronautical Engineers, Inc, United States
- Description: Installation of a cargo interior.
- Applied: April 22, 1985
- Status date: April 7, 1993
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/9c/50/9c50f8d3747e5799d2904127d8e8eb0fd583a63e6c76e86009ba4f0f051660f6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FFC167DA76A03A8F85256CC10083D0B2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1798SO

## ADs that name it (2)

- [AD 2002-16-20](https://openairdocs.org/ad/2002-16-20): Mail Deck Cargo Door Hinge · Cargo door (Aeronautical Engineers STC SA1368SO or 2 others). Effective Sep 19, 2002. Named in the applicability
- [AD 98-26-19](https://openairdocs.org/ad/98-26-19): Floor Beams · Cargo door (Aeronautical Engineers STC SA1368SO or 2 others). Effective Feb 16, 1999. Named in the applicability

## Approved models (3)

- The Boeing Company 727 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Number SA1798SO

This certificate, issued to Aeronautical Engineers, Inc.

P. O. Box 661027 Miami, Florida 33166

Part 4b of the Civil Air Regulations.

Original ProductType Certificate Number: A3WE Make: Boeing Model: 727 Series, 727-100 Series, 727-200 Series

Description of the Type Design Change: Installation of a cargo interior in accordance with Aeronautical Engineers, Inc. Report No. R-534, “B-727 Cargo Modification Drawing List,” dated April 10, 1985, or later Federal Aviation Administration (FAA) approved revision, for 727 and 727-100 series. Installation of a cargo interior in accordance with Aeronautical Engineers, Inc. Report No. R-534, Revision 0, dated April 1, 1993 OR later FAA Approved revision for 727-200 series.

Limitations and Conditions: The approval of this change applies to Boeing Model 727 Series, 727-100 Series and 727-200 Series 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 aircraft. This determination should include consideration of significant changes in weight distribution such as increase in the fixed disposal weight in the fuselage. Continued on page 2.

Date of application: April 22, 1985 Date reissued:

Date of issuance: June 21, 1985 Date amended: August 6, 1985; April 7, 1993

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

Number SA1798SO

Aeronautical Engineers, Inc.

Issued: June 21, 1985 Reissued:

Amended: August 6, 1985; April 7, 1993

Limitations and Conditions continued: Airplane Flight Manual Supplement No. R-547-2, dated June 21, 1985, is a required part of this STC for 727 or 727-100 Series. Airplane Flight Manual Supplement, Aeronautical Engineers, Inc. Report R-731, dated April 7, 1993, is a required part of this STC for Model 727-200 Series airplanes. Report R-548, “Weight and Balance Supplement,” dated February 28, 1984, is required for Model 727-25 airplanes. Report R-548FT, “Weight and Balance Manual,” dated November 29, 1984, is required for Model 727-100 Series airplanes when modified and operated in accordance with Boeing 727 AFM , Appendix 17. Report R-736, “Weight and Balance Manual,” Revision A, dated February 15, 1993, or later FAA approved revision, is required for Model 727-200 Series airplanes.

- END -

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

## Every issue (1)

- April 7, 1993: Amended, Current. [certificate](https://openairdocs.org/files/sha256/9c/50/9c50f8d3747e5799d2904127d8e8eb0fd583a63e6c76e86009ba4f0f051660f6)

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