# STC SH3887NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Air Comm Corporation, United States
- Description: Installation of bleed air cabin heating system and/or windshield defroster system
- Applied: October 12, 1987
- Status date: November 24, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/4b/de/4bde5991b7d8134a38426d71c460d1a69864be89ba5b9844085e047c0e444d1a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8F91CB11A476CCE286257DF7006BE7A8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH3887NM

## ADs that name it (0)

None.

## Approved models (6)

- Bell Helicopter Textron Canada Limited 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-3 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-4 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))

## 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.

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SH3887NM

Date of application: October 12, 1987 Date reissued: November 24, 2014 Date of issuance: December 24, 1987 Date amended: July 19, 1989; November 2, 1990;

December, 3 1992; January 4, 1993;

February 15, 1994; March 25, 2011

Todd Dixon (Signature) Manager, Denver Aircraft Certification Office Northwest Mountain Region (Title)

This certificate, issued to Air Comm Corporation 1575 West 124th Ave Westminster, CO 80234

Part 6 of the Civil Air Regulations.

Original ProductType Certificate Number: H2SW Make: Bell Helicopter Textron Model: 206A, 206B, 206L, 206L-1, 206L-3, 206L-4 Description of the Type Design Change:

Installation of Bleed Air Cabin Heating System and/ or Windshield Defroster System in accordance with Air Comm Corporation Drawing List Report No. DL-206H, Revision N, dated February 9, 1994 or later FAA Approved revision.

1. FAA Approved Flight Manual Supplement for the 206H-200 Bleed Air Cabin Heater in Bell Helicopter Models 206A and 206B, dated December 24, 1987 or later FAA Approved revision is required.

2. FAA Approved Flight Manual Supplement for the 206H-202 Bleed Air Cabin Heater in Bell Helicopter Models 206L, 206L-1, 206L-3, and 206L-4, dated December 24, 1987, or later FAA approved revision is required.

3. FAA Approved Flight Manual Supplement for the 206H-990 Windshield Defroster System (“defroster only” system for rotorcraft with a non-Air Comm Corp. bleed air cabin heater installation) in Bell Helicopter Models 206A and 206B, dated November 2, 1990, or later FAA approved revision is required.

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SH3887NM (Continuation Sheet)

4. FAA Approved Flight Manual Supplement for the 206H-992/ -994 Windshield Defroster System (“defroster only” system for rotorcraft with a non-Air Comm Corp. bleed air cabin heater installation) in Bell Helicopter Models 206L, 206L-1, and 206L-3, dated November 2, 1990, or later FAA approved revision is required.

5. FAA Approved Flight Manual Supplement for the 206H-201 Bleed Air Cabin Heater in Bell Helicopter Model 206B, dated January 3, 1992, or later FAA approved revision is required.

6. FAA approved Flight Manual Supplement for the 206H-203 Bleed Air Cabin Heater in Bell Helicopter Model 206L- 3, dated January 3, 1992, or later FAA approved revision is required.

7. FAA Approved Flight Manual Supplement for the 206H-204 Bleed Air Cabin Heater in Bell Helicopter Model 206L- 4, dated January 3, 1992, or later FAA approved revision is required.

8. FAA approved Flight Manual Supplement for the 206H-204 Bleed Air Cabin Heater in Bell Helicopter Model 206L-4 with Tridair STC SR00036SE (Twin Engine), dated February 15, 1994, or later FAA approved Revision is required.

9. This STC also applies to Bell Model 206L-4 with Twin Engines installed in accordance with STC SR00036SE.

10. This STC also applies to Bell Models 206 A/B, and 206L helicopters with Allison 250-C20R/2 engine installed in accordance with STC SH4179NM and SH4169NM, respectively.

11. Bell Model 206L-1 helicopters which are equipped with ACC 206H-202 series cabin heater and are modified per Bell Engine Upgrade Service Instructions BHT-206-SI-2050 must use the Bell Model 206L-3 performance data per ACC Rotorcraft Flight Manual Supplement 206H-202, Rev. 7 or later FAA approved revision.

12. Bell Model 206L-1 helicopters which are equipped with ACC206H-202 series cabin heater and are modified per Bell Engine Upgrade Service Instructions BHT-206-SI-2050, and Bell Gross Weight Upgrade Service Instructions BHT- 206-SI-2052, must use the Bell Model 206L-4 performance data per ACC Rotorcraft Flight Manual Supplement 206H-202, Rev. 7 or later FAA approved revision.

13. Bell Model 206L-3 helicopters which are equipped with ACC 206H-202 series cabin heater and are modified per Bell Gross Weight Upgrade Service Instructions BHT-206-SI-2052, must use the Bell Model 206L-4 performance data per ACC rotorcraft Flight Manual Supplement 206H-202, Rev. 7 or later FAA approved revision.

14. Bell Model 206L-3 helicopters which are equipped with ACC 206H-203 series cabin heater and are modified per Bell Gross Weight Upgrade Service Instructions BHT-206-SI-2052, must use the Bell Model 206L-4 performance data per ACC Rotorcraft Flight Manual Supplement 206H-204, Rev. 2 or later FAA approved revision.

15. Approval of this change in type design applies to the model of aircraft listed above only.

16. Compatibility of this design change with previously approved alterations must be determined by the installer.

17. 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.

18. A copy of this certificate and the appropriate flight manual supplement as listed above must be maintained as part of the permanent record for the altered aircraft.

----------------------------------------------------END--------------------------------------------------------------

## Every issue (3)

- November 24, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4b/de/4bde5991b7d8134a38426d71c460d1a69864be89ba5b9844085e047c0e444d1a)
- August 15, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/94/47/94477bd77e04bf5dbe16fee5d53d4d58aaf71849ebf992333fc5fb7a52cd6835)
- March 25, 2011: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/29/4c/294c17a20c7cdf815c4b38e1de5f708652ad8d82245e1f1f8c167bdff966ccf2)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.