# STC SA2611WE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Litton Systems, Inc, United States
- Description: Installation of three Litton LTN-51 inertial navigation systems, an inertial navigation switching unit and two Sperry horizontal situation indicators.
- Status date: March 5, 1975
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22WE](https://openairdocs.org/tcds/A22WE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E60FC043F913E1AC85256CC20008C670.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2611WE

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-10-10 ([TCDS A22WE](https://openairdocs.org/tcds/A22WE))

---
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.