# STC SA1921SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Airborne Express Inc., United States
- Description: Installation of Dual King flight management system KNS-660.
- Applied: October 18, 1985
- Status date: May 1, 1986
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/b0/f0/b0f0e79bbf248a1c59b299ce43a42eb34d5c1286e134e81a20523247aee081ac
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135347412920260807153325.0001
- DRS record last changed: August 7, 2026
- Page: https://openairdocs.org/stc/SA1921SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-8-62 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## What the certificate says

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

Lanited States of 2lmenca Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA192150 This certificate issued to: Airborne Express, Inc.

145 Hunter Drive Wilmington, OH 45177 Certifies that the change in the type design for the fillowing product with the limitutions and conditions thereferas specified heronmeets the winerhiness requirements fPert 4b s$ theCivil Air Regulations.

Original Product -Type berlificate Number: 4925 Make: McDonnell Douglas Murtel: DC-8-52 Description of Type Design Change: Installation of Dual King Flight Management System KNS-660 in accordance with Page AvJet Corporation Master Drawing List MDL-85-10 (No Rev.), or later FAA approved revision.

Limiluluns andbonditions: 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. The appropriate FAA Approved Airplane Flight Manual Supplement AFM 86-145 dated April 2, 1986, is required part of this STC.

Mack (Signature ) TO MINISTRATO Manager, Atlanta Aircratt Certification Office (Title)

## Every issue (1)

- May 1, 1986: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b0/f0/b0f0e79bbf248a1c59b299ce43a42eb34d5c1286e134e81a20523247aee081ac)

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