# STC SA2573SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Astronics Luminescent Systems Inc, United States
- Description: Installation of an Emergency Floor Path Lighting System.
- Applied: March 23, 1989
- Status date: June 2, 2022
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/4b/b6/4bb6827a7eb453b2071fe5d4de82c31ad11455b1aedf4c181675527fde52e6fe
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6E355F61B2AF267586258860006379E8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2573SO

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-9-51 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SA2573SO Astronics Luminescent Systems, Inc.

130 Commerce Way East Aurora, NY 14052 PART 4b the Civil Air Regulations A6WE McDonnell Douglas DC9-51 Installation of an Emergency Floor Path Lighting System in accordance with DME Drawing List No.

Y2-04-0004, Rev. B, dated June 06, 1989, or later FAA approved revisions.

This approval should not 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 previously approved modifications will not introduce any adverse effect upon the airworthiness of the aircraft.

March 23, 1989 April 24, 2019, June 2, 2022 June 12, 1989 (for) Christina M. Underwood Manager, Atlanta ACO Branch Compliance and Airworthiness Division Aircraft Certification Service 2

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SA2573SO

## Every issue (2)

- June 2, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4b/b6/4bb6827a7eb453b2071fe5d4de82c31ad11455b1aedf4c181675527fde52e6fe)
- April 24, 2019: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/86/ce/86ceff2cf17ddc9dafd587ff228c0830c53cda6cab89ddf2d269430149262a20)

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