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Other aircraft modifications

STC SH4635SW

FAA DRS lists SH4635SW as Current · Reissued, held by Enviro Systems Inc., for Bell Helicopter Textron (Canada) 206A, Bell Helicopter Textron (Canada) 206B, and Bell Helicopter Textron (Canada) 206L, and 2 more aircraft configurations. Recorded change: Belt driven Freon Air Conditioning System in accordance with Drawing List DL8-1, Revision A, dated September 24, 1982, for Models 206A and 206B; or Drawing List DL-8-15, Revision A, dated September 24, 1982, for Model 206L-1; or later FAA Approved revisions. Drawing List DL-8-1, Revision B, dated November 11, 1982, for Models 206A and 206B; Drawing List DL-8-15 Revision B, date November 11, 1982, are required for installation of Casey Shroud Heater in conjunction with air conditioner. Snapshot dated June 30, 2026.

FAA-listed holder
Enviro Systems Inc.
Aircraft configurations
5
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

Belt driven Freon Air Conditioning System in accordance with Drawing List DL8-1, Revision A, dated September 24, 1982, for Models 206A and 206B; or Drawing List DL-8-15, Revision A, dated September 24, 1982, for Model 206L-1; or later FAA Approved revisions. Drawing List DL-8-1, Revision B, dated November 11, 1982, for Models 206A and 206B; Drawing List DL-8-15 Revision B, date November 11, 1982, are required for installation of Casey Shroud Heater in conjunction with air conditioner.

SH4635SW identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Bell Helicopter Textron (Canada) 206A, Bell Helicopter Textron (Canada) 206B, and Bell Helicopter Textron (Canada) 206L, and 2 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Bell Helicopter Textron (Canada) 206AH2SWBell Helicopter Textron (Canada) 206BH2SWBell Helicopter Textron (Canada) 206LH2SWBell Helicopter Textron (Canada) 206L-1H2SWBell Helicopter Textron (Canada) 206L-3H2SW

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Bell Helicopter Textron (Canada) 206A and Bell Helicopter Textron (Canada) 206B, and 3 more aircraft configurations model, serial range, and configuration?
  2. 02Which configuration, parts, installation data, limitations, and ICAs apply?
  3. 03Who can legally supply the design data, kit, instructions, and ICAs?
  4. 04What parts, labor, conformity, and return-to-service work are excluded?

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