# STC SA7548SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Associated Air Center, Inc. - c/o CT Corporation System, USA
- Description: Installation of Sperry EDZ-800 five-tube EFIS, dual Sperry SP-500 Flight Directors, dual Sperry AZ-800 Air Data Computers, single Honeywell Laseref IRS, and single Universal UNS-1A Flight Management System
- Applied: September 29, 1988
- Status date: December 18, 2017
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/21/f3/21f372b82c9ca93ccfef8d022d95da107d314008979e544e991f9e66e4196505
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139620621220230404180830.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7548SW

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727-200 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.

FAA Form 8110-2 (8/13) Page 1

Part of the Federal A viation Regulations.

Original Product – Type Certificate Number: MDNH:

MRGHO:

Signature

Title

SA7548SW Associated Air Center, Inc. - c/o CT Corporation System 1999 Bryan Street, Suite 900 Dallas, TX 75201 4b A3WE Boeing 727-23 Installation of Sperry EDZ-800 five-tube EFIS, dual Sperry SP-500 Flight Directors, dual Sperry AZ-800 Air Data Computers, single Honeywell Laseref IRS, and single Universal UNS-1A Flight Management System, in accordance with Installation Drawing List 88-727-01, Revision D, dated February 2, 1989, or later FAA approved revision.

This approval is applicable to airplane serial number 20045 only. Airplane Flight Manual Supplements 88-0003-01 and 88-0003-02, dated February 3, 1989, or later FAA approved revision, are required.

Compatibility of this modification with previously installed equipment must be determined by installer.

Certification Basis of this STC refers to Part 4b of the Civil Air Regulations (CAR 4b.)

9/29/1988 2/3/1989 12/18/2017 Jose Mora-Vargas ODA Administrator ODA-710437-SW

FAA Form 8110-2 (8/13) Page 2

To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement):

SA7548SW

## Every issue (1)

- December 18, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/21/f3/21f372b82c9ca93ccfef8d022d95da107d314008979e544e991f9e66e4196505)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.