# STC ST631SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Jet Avion Corp, United States
- Description: Installation of loading and restraint system for palletized cargo.
- Status date: September 12, 1968
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A10](https://openairdocs.org/tcds/4A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D4893ADE49C0B88285256CC3000360B6.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST631SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-7B ([TCDS 4A10](https://openairdocs.org/tcds/4A10))

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