# STC SA3964WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Litton Aero Products, United States
- Description: Installation of dual Litton LTN-211 omega navigation systems.
- Applied: April 24, 1979
- Status date: May 23, 1979
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/ce/37/ce37237b84355d6dc8c9db9c17e794ea23ab0aca3c780fa3fb7ebbf4187d4746
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F6BAA9F5BFE2BFD285256CC2000C5C12.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3964WE

## ADs that name it (0)

None.

## Approved models (4)

- The Boeing Company 727 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727-100C Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))
- The Boeing Company 727C Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

Erited States of Elmerca Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA396401E This conlificate; inued to Litton ACTO ProduCtS Certifies that the change in the type design for the fellowing product with the limitations and conditions therefor ur specificat here meets the uinunthiness requirements if Part 41) fthe Civil Air Regulniona (For certification basis see I.C. Data Sheet AWF) Original Product Type Bertificale Number: ABHE Make: Boeing Atedel: 727 Series, 7270 Series 727-100 Series, 727-100C Series Pueriplions/ type Pesinbhunge. Installation of dual Litton LIN-211 Omega Navigation Systems in accordance with FAA sealed Litton Top Drawing No. 454011-08 Revision "A" or later FAA sealed revision.

Jitton Airplane Flight Manual Supplement No. APD 3-79, FAA approved on May 22, 1979, or later FAA approved revision, is required as part of this modiFication.

Linitatussandbenditiond: The approval of this change in type design applies basically to the above listed nodel aircraft only. this approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft.

Date of Application: APr11 24, 1919 Date viazunt:

Vales fissuence: May 23, 1979 Date Amended:

AVIATIO By directing the léministrater Senorate COMINIS Retena Chfefy Aircraft Engineering Division (Sigratue) (Title) 47 TAA FOM 8110-2 (10-48)

## Every issue (1)

- May 23, 1979: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ce/37/ce37237b84355d6dc8c9db9c17e794ea23ab0aca3c780fa3fb7ebbf4187d4746)

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