# STC SA1923SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Airborne Express Air Inc, United States
- Description: Installation of supplemental door warning indication system.
- Status date: May 1, 1986
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A6A9D045D1264F0B85256CC10083D2C4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1923SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-8-62 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

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