# STC SA3181SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Delta Airlines Inc, United States
- Description: Installation of a 225 passenger seating cabin configuration.
- Status date: March 17, 1992
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A23WE](https://openairdocs.org/tcds/A23WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B2457706E6D8C4A385256CC2000A94E8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3181SO

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation L-1011-385-3 ([TCDS A23WE](https://openairdocs.org/tcds/A23WE))

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