# STC SA5899NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Dow Aero Logistics LLC, United States
- Description: Installation of World Auxiliary Power Company Onboard airstair in the forward mid passenger doorway.
- Applied: January 20, 1992
- Status date: December 11, 2020
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A23WE](https://openairdocs.org/tcds/A23WE)
- Certificate PDF: https://openairdocs.org/files/sha256/fc/b7/fcb76d5413130f45b88d7d7ddb9f5207132458ff7ab09f788653df1c9d79c5dd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/33CB78C101F03D30862586B6004FE120.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5899NM

## ADs that name it (0)

None.

## Approved models (5)

- Lockheed Aircraft Corporation L-1011 Series ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))
- Lockheed Aircraft Corporation L-1011-385-1 ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))
- Lockheed Aircraft Corporation L-1011-385-1-14 ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))
- Lockheed Aircraft Corporation L-1011-385-1-15 ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))
- Lockheed Aircraft Corporation L-1011-385-3 ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))

## 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.

FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 1 of 2 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificate issued to:

Number: SA5899NM Dow Aero Logistics, LLC 6800 Camille Avenue Oklahoma City, Oklahoma 73149 Part 25*of the Federal Aviation Regulations.

*(Certification basis is set forth in Type Certificate Data Sheet A23WE.)

Original Product Make: Lockheed Type Certificate Number: A3WE Model: L-1011-385 Series Description of Type Design Change: Installation of World Auxiliary Power Company On-Board Airstair in the Forward Mid Passenger Doorway in accordance with World Auxiliary Power Company Master Drawing List No. 1423-1100, Revision F, dated February 12, 1993, or later FAA approved revision.

Limitations and Conditions: The approval should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce adverse effect upon the airworthiness of the aircr aft. All components meet the standards of 65/65 FAR

25.853(a)(1), Amendment 25-66. 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: January 20, 1992 Date Reissued: July 16, 1997; January 5, 2000;

December 3, 2001; April 28, 2008;

December 11, 2020 Date of Issuance: March 17, 1993 Date Amended:

Title: Manager, Technical & Administrative Support Section Aviation Safety Los Angeles ACO Branch

FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 2 of 2

Number: SA5899NM

## Every issue (2)

- December 11, 2020: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/fc/b7/fcb76d5413130f45b88d7d7ddb9f5207132458ff7ab09f788653df1c9d79c5dd)
- April 28, 2008: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/ea/2b/ea2b54b5b0bde1f56088adf9023cf69d35d4cb0f0e1aa326537dd2e7e24dd814)

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