# STC SA2504SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: AeroServ Intl Inc, United States
- Description: Installation of Delco C-IV Inertial Navigation System Operational Flight Program, Version 31L.
- Status date: April 21, 1989
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/222809F5AE36C9F085256CC200015F1F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2504SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-9-30 Series ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.