Fixed Wing Single Engine · LYCOMING GO-435C&D SER · as of Sep 21, 2026
Resources Engine · Lycoming Engines ↗ Search FAA TCDS ↗
Distribution · currently registered
By state (top 10)
- OR 100.0% 1
By decade of manufacture
- 1950s 100.0% 1
NTSB records
No NTSB-recorded events match HELIO AIRCRAFT LIMITED H-391 in the indexed corpus.
Airworthiness directives
8 directive(s) on file. Showing the most recent 8.
- Aug 17, 2020
Airworthiness Directives; Aspen Avionics, Inc.
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. The AD applies to certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. As pu…
- Jul 31, 2020
Airworthiness Directives; Aspen Avionics, Inc.
The FAA is adopting a new airworthiness directive (AD) for certain Aspen Avionics, Inc., Evolution Flight Display (EFD) EFD1000 Emergency Backup Display, EFD1000 Multi-Function Display, and EFD1000 Primary Flight Display systems installed on various airplanes. This AD imposes operating restrictions on these display sy…
- Jan 23, 2019
Airworthiness Directives; Aspen Avionics, Inc., Evolution Flight Display Units
We are adopting a new airworthiness directive (AD) for certain Aspen Avionics, Inc. (Aspen), Evolution Flight Display (EFD) EFD1000 Primary Flight Display (PFD), EFD1000 Multi-Function Display (MFD), EFD1000 Emergency Backup Display (EBD), and EFD500 MFD units installed on various aircraft. This AD requires disabling…
- Jun 26, 2003
Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )(2,3)(X,V)( )-( ) Series and HA-A2V20-1B Series Propellers with Aluminum Blades
This amendment revises an existing airworthiness directive (AD), that is applicable to Hartzell Propeller Inc. ( )HC-( )(2,3)(X,V)( )-( ) series and HA-A2V20-1B series propellers with aluminum blades. That AD currently requires initial and repetitive dye penetrant and eddy current inspections of the blade and an optic…
- Jan 2, 2003
Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )(2,3)(X,V)( )-( ) Series and HA-A2V20-1B Series Propellers with Aluminum Blades
The Federal Aviation Administration (FAA) proposes to revise an existing airworthiness directive (AD), applicable to Hartzell Propeller Inc. ( )HC-( )(2,3)(X,V)( )-( ) series and HA-A2V20-1B series propellers with aluminum blades. That AD currently requires initial and repetitive dye penetrant and eddy current inspect…
- Nov 30, 1999
Airworthiness Directives; Precise Flight, Inc. Model SVS III Standby Vacuum Systems
This amendment adopts a new airworthiness directive (AD) that applies to all aircraft equipped with Precise Flight, Inc. Model SVS III standby vacuum systems installed in accordance with the applicable supplemental type certificate (STC) or through field approval. This AD requires incorporating revised operating limit…
- Jul 7, 1999
Airworthiness Directives; Precise Flight, Inc. Model SVS III Standby Vacuum Systems
This document proposes to adopt a new airworthiness directive (AD) that would apply to all U.S. owners and operators of aircraft equipped with Precise Flight, Inc. Model SVS III standby vacuum systems installed in accordance with the applicable supplemental type certificate (STC) or through field approval. The propose…
- Aug 27, 1997
Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )(2,3)(X,V)( )-( ) Series and HA-A2V20-1B Series Propellers With Aluminum Blades
This amendment supersedes four existing airworthiness directives (ADs), applicable to Hartzell Propeller Inc. ( )HC-( )(2,3)(X,V)( )-( ) series propellers with aluminum blades, that currently require inspections for cracks in blade shanks and clamps. This amendment requires initial and repetitive dye penetrant and edd…
Type certificate data sheets · 1 match in the FAA catalog
- 1A8 Helio Aircraft LLC Historical Rev 34 · 10/13/2005
Models: H-295 (USAF U10D), H-391 (USAF UL-24), H-700, H-800 + 5 more
Supplemental type certificates · 261 on file
- 04/01/2025 STC SA02738CH (PAGE 1) Installation of L-3 Communications Avionics Systems Acron Aviation Inc. DRS ↗
- 04/01/2025 STC SA04046CH Page 1 Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) Acron Aviation Inc. DRS ↗
- 09/26/2024 STC SA02594SE SkyView HDX Instrumentation and Autopilot System manufactured Dynon Avionics DRS ↗
- 08/30/2024 STC SA2337CE Repair scheme for main landing gear assemblies Helio Alaska Inc. DRS ↗
- 08/27/2024 STC SA04837NY Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights AeroLED's Holdings, LLC DRS ↗
- 08/21/2024 STC SA01757WI To allow the use of UL91 or UL94 (minimum) grade aviation fuel Swift Fuels LLC DRS ↗
- 06/18/2024 STC SA04568CH Installation of the uAvionix tailBeaconX, a tail mounted position light with integrated Automatic Dependent Surveillance - Broadcast (ADS-B) Out and 1090MHz Mode-S transponder func… uAvionix Corporation DRS ↗
- 06/13/2024 STC SA02511SE (1 OF 3) Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 06/13/2024 STC SA02511SE (1 OF 2) Installation of replacement fuel quantity indicator sending unit(s) CiES Inc. DRS ↗
- 05/17/2024 STC SA4503NM (PAGE 1) Remove original cloth covering and install Ceconite covering Ceconite Division of Poly-Fiber Inc. DRS ↗
- 02/02/2024 STC SA02658SE (1 OF 2) Installation of Garmin GI 275 Multi-Function Display System Garmin International Inc. DRS ↗
- 12/12/2023 STC SA02571SE (PAGE 1) Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc. DRS ↗
- 10/10/2023 STC SA01899WI Installation of Garmin G3X Touch Electronic Flight Instrument System Garmin International Inc. DRS ↗
- 08/16/2023 STC SA02576AK Installation of Cleveland and ABI, LLC Wheel and Brake Kits ABI LLC DRS ↗
- 12/12/2022 STC SA02738CH (PAGE 1) Installation of L-3 Communications Avionics Systems L3Harris Aviation Products Inc. DRS ↗
- 12/12/2022 STC SA04046CH Page 1 Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500) L3Harris Aviation Products Inc. DRS ↗
- 10/12/2022 STC SA02594SE SkyView HDX Instrumentation and Autopilot System manufactured Dynon Avionics DRS ↗
- 09/09/2022 STC SA4503NM (PAGE 1) Install Ceconite covering material. Ceconite Division of Poly-Fiber Inc DRS ↗
- 09/01/2022 STC SA01967WI (2 OF3) Use of GAMI G100UL High Octane Unleaded Avgas General Aviation Modifications Inc. DRS ↗
- 07/27/2022 STC SA01757WI To allow the use of UL91 or UL94 (minimum) grade aviation fuel Swift Fuels LLC DRS ↗
- 07/06/2022 STC SA02203AK (PAGE 1) Installation of FlightLogic Synthetic Vision Electronic Flight Information System (EFIS-SV). Genesys Aerosystems Inc. DRS ↗
- 06/06/2022 STC SA02203AK (PAGE 1) Installation of FlightLogic Synthetic Vision Electronic Flight Information System (EFIS-SV). Genesys Aerosystems Inc. DRS ↗
- 05/19/2022 STC SA04776NY (1 OF 2) The HIPEC Covering and Finishing System must be performed and maintained HIPEC Aircraft Coatings Inc. DRS ↗
- 03/30/2022 STC SA02444AK (PAGE 1) Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed ADS-B Technologies LLC DRS ↗
- 03/30/2022 STC SA04568CH Installation of the uAvionix tailBeaconX, a tail mounted position light with integrated Automatic Dependent Surveillance - Broadcast (ADS-B) Out and 1090MHz Mode-S transponder func… uAvionix Corporation DRS ↗
- 02/02/2022 STC SA02571SE (PAGE 1) Installation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display). Garmin International Inc DRS ↗
- 01/05/2022 STC SA02594SE SkyView HDX Instrumentation and Autopilot System manufactured Dynon Avionics DRS ↗
- 12/29/2021 STC SA01899WI Installation of Garmin G3X Touch Electronic Flight Instrument System Garmin International Inc DRS ↗
- 12/20/2021 STC SA02594SE SkyView HDX Instrumentation and Autopilot System manufactured Dynon Avionics DRS ↗
- 10/25/2021 STC SA01015SE Installation of eligible Alaska Bushwheel, Inc. wheels and TSO-C62d tires ABI LLC DRS ↗
+ 231 more STCs on file
PMA replacement parts · 3 on file
- K-1001#https://drs.faa.gov/browse/excelExternalWindow/FF8204C748DED3FC8525704D0051E68C.0001## SlickStart Installation Kit Unison Industries (formerly Slick Aircraft Products) replaces Modification Part
- A-0750161-25#https://drs.faa.gov/browse/excelExternalWindow/3E93DE3536407CA086257552006FDB86.0001## Exhaust Half Clamp Aerospace Welding Minneapolis, Inc. replaces Navion P/N 229-004
- AK177 and AK178#https://drs.faa.gov/browse/excelExternalWindow/C879D9A34E0372DD86257513005D43CC.0001## Mitchell Kits Century Flight Systems Inc replaces -
Advisory circulars & Federal Register
Advisory circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register · Parts 91 & 43
- 2026-09-14 Use of Certain Restricted Category Aircraft for the Transport of Firefighters for Wildfire Suppression FR ↗
- 2026-07-31 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
- 2026-07-02 Enabling Supersonic Overland Flight FR ↗
- 2026-07-01 Mechanic Certification: Inspection Rating and Recent Experience Requirements FR ↗
- 2026-06-30 Designation-Restrict the Operation of Unmanned Aircraft in Close Proximity to a Fixed Site Facility; Extension of Comment Period FR ↗
Registered N-numbers · 1
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N987PH | OR | 1958 | · | Look up ↗ |
Source — FAA Aircraft Registry
Sources
- FAA Aircraft Registry ↗ Refreshed Apr 27, 2026 Available
- NTSB CAROL ↗ Refreshed Jun 10, 2026 Available
- Federal Register (FAA Airworthiness Directives) ↗ Refreshed Apr 27, 2026 Available