# STC SH3894SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Bell Textron Inc., United States
- Description: Installation of 9-place forward facing airline seats.
- Applied: September 14, 1987
- Status date: December 7, 2023
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/8c/4e/8c4ececfc4fcaaf6fef01edd4e43c30d61ad1168b0b0f0c11c112bcab930a295
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171152990220231228170915.0001
- DRS record last changed: May 26, 2026
- Page: https://openairdocs.org/stc/SH3894SW

## ADs that name it (0)

None.

## Approved models (1)

- Bell Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## 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.

SH3894SW Bell Textron, Inc.

441 Industrial Park Road Piney Flats, TN 37686 Part 29 the Federal Aviation Regulations H4SW Bell Helicopter Textron 412 Installation of 9-place forward facing airline seat in accordance with Aero Seats, Inc., Drawing ASI-10003, Revision B dated December 21, 1987, or later FAA approved revisions.

The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

September 14, 1987 February 23, 2012; December 7, 2023 December 22, 1987 for Paul (Vu) Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 2

SH3894SW 2

## Every issue (1)

- December 7, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8c/4e/8c4ececfc4fcaaf6fef01edd4e43c30d61ad1168b0b0f0c11c112bcab930a295)

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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.