FAA-listed STC holder

Keystone Helicopter Corp. STCs

The Jun 30, 2026 FAA DRS snapshot lists 8 selected supplemental type certificates with status Current under Keystone Helicopter Corp.. The records span 7 public aircraft directories and 5 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Sep 4, 2009

latest recorded revision

Modification mix

Cabin and interiors3 Avionics2 Electrical systems1 Propellers1 Other aircraft modifications1

Aircraft represented

Sikorsky Aircraft S-76C226 STCs Sikorsky Aircraft S-76A173 STCs Sikorsky Aircraft S-76B169 STCs Sikorsky Aircraft S-92A118 STCs Pilatus Aircraft PC-12/45108 STCs Sikorsky Aircraft S-61N89 STCs Eurocopter France SA341G24 STCs

Recently revised records

Showing the 8 most recently revised records. Category directories provide the complete paginated discovery path.

8 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Keystone Helicopter Corp. supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SR02585NY-D Installation of a concorde Battery Corporation Model RG-390E. Electrical systems View record	Sikorsky Aircraft S-61NTC 1H15	Current at cited snapshot Revised Sep 4, 2009 Application: May 19, 2009	FAA holder: Keystone Helicopter Corp. FAA authority record
SR0258NY-D Installation of a RosenView VX Moiving Map / DVD Player Cabin Entertainment System. Cabin and interiors View record	Sikorsky Aircraft S-76ATC H1NE Sikorsky Aircraft S-76BTC H1NE Sikorsky Aircraft S-76CTC H1NE	Current at cited snapshot Revised Jul 27, 2009 Application: Mar 25, 2009	FAA holder: Keystone Helicopter Corp. FAA authority record
SR09477RC Installation of Electronic Standby Instrument System (ESIS) for the Sikorski Model S-92 helicopter. Avionics View record	Sikorsky Aircraft S-92ATC R00024BO	Current at cited snapshot Revised Jun 4, 2009 Application: Jun 4, 2009	FAA holder: Keystone Helicopter Corp. FAA authority record
SR025756NY-D Installation of a Main Rotor Blade Recognition Light. Propellers View record	Sikorsky Aircraft S-76ATC H1NE Sikorsky Aircraft S-76BTC H1NE Sikorsky Aircraft S-76CTC H1NE	Current at cited snapshot Revised Dec 23, 2008 Application: May 30, 2008	FAA holder: Keystone Helicopter Corp. FAA authority record
SR09474RC Installation of a VIP Interior configurations. Cabin and interiors View record	Sikorsky Aircraft S-92ATC R00024BO	Current at cited snapshot Revised Nov 26, 2007 Application: Nov 21, 2005	FAA holder: Keystone Helicopter Corp. FAA authority record
SR0947RC Installation of a VIP Interior configuration. Cabin and interiors View record	Sikorsky Aircraft S-92ATC R00024BO	Current at cited snapshot Revised Nov 26, 2007 Application: Nov 21, 2005	FAA holder: Keystone Helicopter Corp. FAA authority record
SR01115NY-D Installation of a Safe Flight Instrument Corporation collective and pedal shaker system. Approved for serial number 1584 ONLY. Avionics View record	Eurocopter France SA341GTC H6EU	Current at cited snapshot Revised Aug 20, 2001 Application: Not listed	FAA holder: Keystone Helicopter Corp FAA authority record
SA01110NY-D Installation of IS&S Altimeter. Other aircraft modifications View record	Pilatus Aircraft PC-12/45TC A78EU	Current at cited snapshot Revised Nov 14, 2000 Application: Not listed	FAA holder: Keystone Helicopter Corp FAA authority record