# STC SA8021NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: United Airlines Inc, United States
- Description: Installation of ACARS Management Unit, Collins Model Number DLM-706B, P/N 622-8910-110, with ATC data link capability in accordance with FAA approved United Air Lines COA 8-4039 ER 1, Rev B, dated June 25, 1994, or later FAA approved revisions.  FAA Approved United Air Lines SATCOM/ACARS Airplane Flight Manual Supplement to Boeing Airplane Flight Manual Document No. D6U10001, FAA Approved August 1, 1994, or later FAA approved revisions, is required as part of this modification.
- Applied: August 11, 1992
- Status date: November 30, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/58/4c/584cf8e1540b2728cb12b3c2a24f046f55b500a857766bb671560e07b14ab734
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9F5AFE43CADC8AA0862579950064F6E6.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA8021NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 747-400 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## 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.

This Certificate issued to United Air Lines, Inc.

600 Jefferson Street Houston, Texas 77002

Part 25 of the Federal Aviation Regulations. See Type Certificate Data Sheet A20WE for certification basis Original Product Type Certificate Number :

A20WE

Boeing

747-400 series Description of Type Design Change: Installation of ACARS Management Unit, Collins Model Number DLM- 706B, P/N 622-8910-110, with ATC data link capability in accordance with FAA approved United Air Lines COA 8-4039 ER 1, Rev B, dated June 25, 1994, or later FAA approved revisions. FAA Approved United Air Lines SATCOM/ACARS Airplane Flight Manual Supplement to Boeing Airplane Flight Manual Document No. D6U10001, FAA Approved August 1, 1994, or later FAA approved revisions, is required as part of this modification.

Limitations and Conditions: This installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this in stallation and any previous ly approved configuration will not introduce any adverse effect upon the airworthin ess of the aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: August 11, 1992

Date of issuance: August 1, 1994

Date reissued: November 30, 2011

( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

## Every issue (1)

- November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/58/4c/584cf8e1540b2728cb12b3c2a24f046f55b500a857766bb671560e07b14ab734)

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