# STC SA2154WE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Litton Systems, Inc, United States
- Description: Installation of triple Litton LTN-51 inertial navigation system.
- Status date: April 23, 1971
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D5ECE604AE70690485256CC200015A56.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2154WE

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-8-63 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-63F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

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