# STC ST400SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Lockheed Martin Aeronautics Company, United States
- Description: Installation of palletized cargo loading and restraint system.
- Status date: February 10, 1989
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1SO](https://openairdocs.org/tcds/A1SO)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1D9600A1D781F10185256CC300035FF2.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST400SO

## ADs that name it (0)

None.

## Approved models (4)

- Lockheed Aircraft Corporation 382 ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))
- Lockheed Aircraft Corporation 382B ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))
- Lockheed Aircraft Corporation 382E ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))
- Lockheed Aircraft Corporation 382G ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))

---
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.