# STC SA2184NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: LMI Aerospace, United States
- Description: Dual Litton LTN 211 Omega navigation system.
- Applied: October 27, 1983
- Status date: July 5, 2018
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/dc/7d/dc7dbc34d08cb6c8ef2dfa70ab794129f62d174d64900aef98069ce8379d6f7a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F9DE6540924B942D862582CC0061F9C5.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2184NM

## ADs that name it (0)

None.

## Approved models (1)

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

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate

Number SA2184NM

This certificate, issued to LMI Aerospace 1910 Merrill Creek Parkway Everett, WA 98203

Part 4b of the Civil Aviation Regulations.

Original ProductType Certificate Number: A3WE Make: Boeing Model: 727-22

Description of the Type Design Change: Installation of a dual Litton LTN 211 Omega Navigation System on American Trans Air, Model 727-22 in accordance with FAA sealed Tramco top drawing 83-060, sh.1, Rev. New and Sh.2, Rev. New. The Litton LTN 211 Omega system utilizes program 211-34-02.

Limitations and Conditions: The approval of this change in Type Design applies basically to the Boeing 727-22 aircraft and should not be extended to other specific models of these airplanes on which previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. A copy of this certificate and the FAA Approved Flight Manual Supplement must be kept in the permanent records of the modified aircraft.

Date of application: October 27, 1983 Date reissued: July 5, 2018 Date of issuance: December 15, 1983 Date amended:

(Signature)

Manager, Seattle ACO Branch (Title)

## Every issue (2)

- July 5, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/dc/7d/dc7dbc34d08cb6c8ef2dfa70ab794129f62d174d64900aef98069ce8379d6f7a)
- December 15, 1983: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/f7/ac/f7ac5d323e1a28a153c2607848df9d99a3970b7b960d6a3e32774ad071053b27)

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