# STC SR00058DE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Geo-Seis Helicopters Inc, United States
- Description: Installation of nine-place cabin seating arrangement.
- Applied: September 22, 1993
- Status date: April 15, 1997
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/1f/56/1f56922f4c4dc90fce9793b15d9c5af252e779a93ec6088013a6627ecd595fb1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/634E3A697538E33785256CC200622454.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR00058DE

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## What the certificate says

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

Bateà kates Di America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SR00058DE This certificate issued to: Geo-Seis Helicopters, Inc.

Part 29 of the Federal Aviation Regulations.

Original Product -Type Certificate Number: H4SW Make: Bell Model: 212 Description of Type Design Change:

Installation of nine-place cabin seating arrangement in accordance with Geo-Seis Helicopters, Inc. Drawing No.

G.S.H.001, FAA approved April 15, 1997 or later FAA approved revision.

1. Seating installation is limited to nine passengers or less

2. FAA approved Rotorcraft Flight Manual Supplement dated April 15, 1997 or later approved revision is required.

3. A copy of this certificate and the Rotorcraft Flight Manual Supplement, dated April 15, 1997 or later FAA approved revision must be maintained as part of the permanent record for the modified rotorcraft.

Date of Application: September 22, 1993 Date Reissued:

Date of Issuance: October 7, 1993 Date Amended: April 15, 1997

FEDERAL AVIATION Ronald F. May (Signature) Manager TOMANST RATION Northwest Mountain Region Denver Aircraft Certification Office (Title)

## Every issue (1)

- April 15, 1997: Amended, Current. [certificate](https://openairdocs.org/files/sha256/1f/56/1f56922f4c4dc90fce9793b15d9c5af252e779a93ec6088013a6627ecd595fb1)

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