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Rotorcraft modifications

STC SH5685NM

FAA DRS lists SH5685NM as Current · Amended, held by Columbia Helicopters Inc, for Columbia Helicopters 234. Recorded change: Installation of an improved N2 Control System in accordance with Columbia Helicopters, Inc. (CHI) Master Drawing List 93-AVI-0304, Revision H, dated August 12, 2011, or later FAA-approved revision. Snapshot dated June 30, 2026.

FAA-listed holder
Columbia Helicopters Inc
Aircraft configurations
1
FAA revision date
FAA status
Current · Amended

Recorded modification

What the FAA record covers

Installation of an improved N2 Control System in accordance with Columbia Helicopters, Inc. (CHI) Master Drawing List 93-AVI-0304, Revision H, dated August 12, 2011, or later FAA-approved revision.

SH5685NM 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: Columbia Helicopters 234. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Columbia Helicopters 234H9EA

Buyer checks

Confirm before sourcing

  1. 01Does it cover the exact Columbia Helicopters 234 model, serial range, and configuration?
  2. 02Which configuration, limitations, installation data, 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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SR01271SERotorcraft modifications

Installation of a replacement master caution panel per Columbia Helicopters, Inc. Master Drawing List Document No. 03-RDE-0509, Revision B, dated January 19, 2004, or later Federal Aviation Administration (FAA) approved revision. The modification must be maintained in accordance with Columbia Helicopters, Inc. Maintenance Manual Supplement Document No. C07-2/33-10-00, Revision 0, dated October 20, 2003 or later FAA accepted revision.

FAA holder: Columbia Helicopters Inc

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SR01275SERotorcraft modifications

Installation of a replacement attitude indicator per Columbia Helicopters, Inc. Master Drawing List Document No. 03-RDE-0412, Revision B, dated January 19, 2004, or later Federal Aviation Administration (FAA) approved revision. The modification must be maintained in accordance with Columbia Helicopters, Inc. Maintenance Manual Supplement Document No. C07-2/34-23-00, Revision 0, dated September 19, 2003, or later FAA accepted revision.

FAA holder: Columbia Helicopters Inc

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SR01277SERotorcraft modifications

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FAA holder: Columbia Helicopters Inc

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