Aircraft STC directory

Air & Space America 18A STCs

The Jun 30, 2026 FAA DRS snapshot contains 8 selected supplemental type certificates with status Current whose public applicability data names the Air & Space America 18A. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

8

listed Current at snapshot

1

holder directories

5

modification categories

Jul 27, 2011

latest recorded revision

Modification demand surface

Safety and emergency equipment2 Other aircraft modifications2 Engine and powerplant2 Propellers1 Cabin and interiors1

Recorded holders

Heliplane Aircraft Corporation International7

Recently revised 18A STCs

Showing the 8 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA104GLSafety and emergency equipmentRevised Jul 27, 2011

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.

FAA holder: Heliplane Aircraft Corporation International

SH14CEOther aircraft modificationsRevised Jul 27, 2011

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.

FAA holder: Heliplane Aircraft Corporation International

SH156GLPropellersRevised Jul 27, 2011

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.

FAA holder: Heliplane Aircraft Corporation International

SH293GLOther aircraft modificationsRevised Jul 27, 2011

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

FAA holder: Heliplane Aircraft Corporation International

SH317GLCabin and interiorsRevised Jul 27, 2011

Removal of cabin door for flight.

FAA holder: Heliplane Aircraft Corporation International

SH2673SOSafety and emergency equipmentRevised Jul 22, 2011

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.

FAA holder: Heliplane Aircraft Corporation International

SH2138SOEngine and powerplantRevised Jun 27, 2011

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.

FAA holder: Heliplane Aircraft Corporation International

SA1315WEEngine and powerplantRevised Apr 15, 2011

Installation of Mixture Monitor (exhaust gas temperature probe, gage and selector) in accordance with Delta Products Part Lists A-192 and A-193, or in accordance with Tri-Star Corporation Mixture Monitor Installation Instructions dated December 9, 1981, or later FAA approved revision and/or Drawing List MM-127 dated November 15, 1981, or later FAA approved revision in aircraft models listed in Master Eligibility List P-80-A-6 revised March 29, 1968, copy attached, or later FAA approved revision.

FAA holder: Universal Corporation