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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.

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

Recorded modification

What the FAA record covers

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

Related rotorcraft modifications STCs

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

Installation of an auxiliary AC bus system per Columbia Helicopters, Inc. Master Drawing List Document No. 02-RDE-0901, 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. C07-2/24-20-00, Revision 0, dated October 15, 2003, or later FAA accepted revision.

FAA holder: Columbia Helicopters Inc

View record

FAA record reference

STC number
SH5685NM
Product
Aircraft · Rotorcraft
Country
United States
Application date
May 23, 1981
Revision date
October 7, 2011
CFR references
Part 21, Part 29