FAA-listed STC holder

Heliplane Aircraft Corporation International STCs

The Jun 30, 2026 FAA DRS snapshot lists 7 selected supplemental type certificates with status Current under Heliplane Aircraft Corporation International. The records span 1 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

Jul 27, 2011

latest recorded revision

Modification mix

Safety and emergency equipment2 Other aircraft modifications2 Propellers1 Cabin and interiors1 Engine and powerplant1

Aircraft represented

Air & Space America 18A8 STCs

Recently revised records

Showing the 7 most recently revised records. Category directories provide the complete paginated discovery path.

7 displayed records.

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

Heliplane Aircraft Corporation International supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SA104GL Installation of a 0.6 second time delay circuit in the side-slip warning system in accordance with Farrington Aircraft Corporation Drawing No. FAC-1001, revision D, and FAC-100, Page 3, revision C, and later approved revisions. Safety and emergency equipment View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jul 27, 2011 Application: Dec 26, 1972	FAA holder: Heliplane Aircraft Corporation International FAA authority record
SH14CE Installation of variable pitch control system in accordance with Devore Aviation Corporation Drawings DE-3300, Rev. F, dated 12/28/71, DE-3301, Rev. C, dated 11/19/71, DE-3302, dated 9/7/71, DE-3303, dated 10/21/71, DE-3304, dated 11/19/71, and DE-3305, dated 11/19/71. Other aircraft modifications View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jul 27, 2011 Application: Jul 17, 1969	FAA holder: Heliplane Aircraft Corporation International FAA authority record
SH156GL Installation of Hartzell HC-C3Y(K, R)-1BLF/FL7663( )-4R propeller in accordance with Farrington Aircraft Corporation Installation Instructions FAC-2001 dated October 1, 1976. Propellers View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jul 27, 2011 Application: Aug 14, 1976	FAA holder: Heliplane Aircraft Corporation International FAA authority record
SH293GL Modification of rotor hub drag link in accordance with Devore Aviation Corporation Stress Memo dated December 21, 1978. Other aircraft modifications View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jul 27, 2011 Application: Jan 8, 1979	FAA holder: Heliplane Aircraft Corporation International FAA authority record
SH317GL Removal of cabin door for flight. Cabin and interiors View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jul 27, 2011 Application: May 7, 1979	FAA holder: Heliplane Aircraft Corporation International FAA authority record
SH2673SO Installation of Fin Tip Plates in accordance with Farrington Aircraft Drawing No. FAC-FIN-1011, Revision A , dated October 13, 1989, and removal of existing Side Slip Warning System. Safety and emergency equipment View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jul 22, 2011 Application: May 24, 1989	FAA holder: Heliplane Aircraft Corporation International FAA authority record
SH2138SO Modification of the exhaust and the addition of a muffler and re-contoured engine cowling in accordance with Farrington Aircraft Corp. installation instructions dated February 27, 1987 and Master Drawing List revised August 23, 1987. Engine and powerplant View record	Air & Space America 18ATC 1H17	Current at cited snapshot Revised Jun 27, 2011 Application: Oct 24, 1985	FAA holder: Heliplane Aircraft Corporation International FAA authority record

Modification mix

Aircraft represented

Recently revised records

Installation of a 0.6 second time delay circuit in the side-slip warning system in accordance with Farrington Aircraft Corporation Drawing No. FAC-1001, revision D, and FAC-100, Page 3, revision C, and later approved revisions.

Installation of variable pitch control system in accordance with Devore Aviation Corporation Drawings DE-3300, Rev. F, dated 12/28/71, DE-3301, Rev. C, dated 11/19/71, DE-3302, dated 9/7/71, DE-3303, dated 10/21/71, DE-3304, dated 11/19/71, and DE-3305, dated 11/19/71.

Installation of Hartzell HC-C3Y(K, R)-1BLF/FL7663( )-4R propeller in accordance with Farrington Aircraft Corporation Installation Instructions FAC-2001 dated October 1, 1976.

Modification of rotor hub drag link in accordance with Devore Aviation Corporation Stress Memo dated December 21, 1978.

Removal of cabin door for flight.

Installation of Fin Tip Plates in accordance with Farrington Aircraft Drawing No. FAC-FIN-1011, Revision A , dated October 13, 1989, and removal of existing Side Slip Warning System.

Modification of the exhaust and the addition of a muffler and re-contoured engine cowling in accordance with Farrington Aircraft Corp. installation instructions dated February 27, 1987 and Master Drawing List revised August 23, 1987.