# STC SA4978NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: LMI Aerospace, United States
- Description: Installation of traffic alert and collision avoidance system (TCAS) provisions.
- Applied: August 13, 1990
- Status date: November 28, 2018
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/49/63/4963171df3b8d062a3fc527b80d10da2598a0b258b445ce0002322d0418dafab
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/17766ABD58466763862583580054E2A4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4978NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 737-300 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))

## 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 SA4978NM

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

Part 25 of the Federal Aviation Regulations.

Original ProductType Certificate Number: A16WE Make: Boeing Model: 737-300

Description of the Type Design Change: Installation of Traffic Alert and Collision Avoidance System (TCAS) provisions in accordance with Tramco Top Drawing 90-078 Revision A dated August 20, 1990, or later FAA- approved revision.

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only. This approval is applicable only to the electrical provisions for TCAS and does not approve t he actual TCAS installation or any TCAS equipment. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft.

Date of application: August 13, 1990 Date reissued: November 2, 2018; November 28, 2018 Date of issuance: September 20, 1990 Date amended: July 6, 2007

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Manager, Seattle ACO Branch (Title)

## Every issue (3)

- November 28, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/49/63/4963171df3b8d062a3fc527b80d10da2598a0b258b445ce0002322d0418dafab)
- November 2, 2018: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f8/2f/f82f616f1ab6d8565d8510abb00802786f1766ea19134567bf07e773d86b85e3)
- July 6, 2007: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a5/f5/a5f54877abc48f9e78ea37e3ee420482ea0e2b35e249a93931b4a5ac0dd8a613)

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