# STC SA3918NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Rockwell Collins Inc., United States
- Description: Installation of a Lavatory Ball Valve and associated hardware in accordance with FAA approved Kaiser ElectroPrecision Drawing List Number DL0183-0018, Revision "F", dated March 10, 1988, or later FAA approved revision.
- Applied: July 20, 1987
- Status date: November 17, 2011
- Product: Aircraft
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/23/38/233896ec8fada44b80dbce48e020ad3afa01058b0271979b72bb2cacf9b816f8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0322AED3BE2B32D98625798900657656.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3918NM

## ADs that name it (0)

None.

## Approved models (2)

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

This Certificate issued to Rockwell Collins, Inc.

2642 Michelle Drive Tustin, CA 92780 Part 2b* of the Civil Air Regulations.

* ifi i b i i f h i ifi hOriginal Product Type Certificate Number :

A3WE Boeing 727-100 Series, 727-200 Series Description of Type Design Change: Installation of a Lavatory Ball Valve and associated hardware in accordance with FAA approved Kaiser ElectroPrecision Drawing List Number DL0183-0018, Revision “F”, dated March 10, 1988, or later FAA approved revision.

Limitations and Conditions: The approval of this change in type design applies to the aforementioned models only. This modification should not be incorporated in any aircraft unless it is determined that the interrelationship between this change and any previously approved configuration will not introduce any adverse effect upon the airworthiness 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: July 20, 1987

Date of issuance: May 4, 1988

Date reissued: December 7, 2005; November 17, 2011

( Signature)

Manager, Cabin Safety, Mechanical & Environmental Systems Branch 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 (2)

- November 17, 2011: Issued, Current. [certificate](https://openairdocs.org/files/sha256/23/38/233896ec8fada44b80dbce48e020ad3afa01058b0271979b72bb2cacf9b816f8)
- December 7, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/01/80/0180dd85f56b089628c349efe8b6a59c7b8686949829350dbb6e29d420073d12)

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