# N565JS: 1956 Helio H-391B

- Status: Valid registration
- Airframe: [Helio H-391B](https://openairdocs.org/model/helio-h-391b) (registry code 4300106, 4 seats)
- Engine: [Lycoming GO-435C&D series](https://openairdocs.org/engine/lycoming-go-435c-d-series) (registry code 41521)
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8) (Helio Alaska Inc.) (OpenAirDocs)
- Serial number: 039
- Year built: 1956
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: June 9, 1964
- Certificate issued: September 17, 2026
- Expires: September 30, 2033
- Mode S code: A73A56
- Registered owner: [Yundt Joshua J](https://openairdocs.org/faa-owner/YUNDT%20JOSHUA%20J)
- Location: [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla)
- Owner type: Individual
- Owner's area on the map: 61.6051° N, 149.4227° W: Placed by OpenAirDocs at the center of ZIP code 99654, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=565JS
- Page: https://openairdocs.org/aircraft/N565JS

From the FAA registry file of October 21, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Lycoming GO-435C&D model are included.

## ADs that may apply (OpenAirDocs): 11 in force

### Matched by airframe (Helio H-391B)

- [AD 2022-03-15](https://openairdocs.org/ad/2022-03-15): Fuel Quantity Indicator · Garmin G3X Touch Electronic Flight Instrument System (STC SA01899WI). Effective Mar 21, 2022
- [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005
- [AD 82-16-08](https://openairdocs.org/ad/82-16-08): Left and Right Main Spar Carry-Thru Assembly · Helio H-250, H-295 (USAF U10D), H-391 (USAF UL-24) and 4 more. Effective Aug 3, 1982
- [AD 79-07-02](https://openairdocs.org/ad/79-07-02): Batteries · Aircraft Parts & Development A, A-2, A-3 and 149 more. Effective Apr 3, 1979
- [AD 63-18-02](https://openairdocs.org/ad/63-18-02): Engine Breather · Helio H-391B, H-395 (USAF L-28A or U-10B) and H-395A. Effective Sep 1, 1963
- [AD 59-17-06](https://openairdocs.org/ad/59-17-06): Pulley Guards · Helio H-391B and H-395 (USAF L-28A or U-10B)
- [AD 59-17-05](https://openairdocs.org/ad/59-17-05): Horizontal Tail Spar Fitting · Helio H-391B and H-395 (USAF L-28A or U-10B)
- [AD 58-25-04](https://openairdocs.org/ad/58-25-04): Fin Hinge Attachment · Helio H-391B and H-395 (USAF L-28A or U-10B)
- [AD 58-01-04](https://openairdocs.org/ad/58-01-04): Aileron Bellcrank Inspection · Helio H-391B
- [AD 57-25-02](https://openairdocs.org/ad/57-25-02): Fin Spar Inspection · Helio H-391B
- [AD 56-22-02](https://openairdocs.org/ad/56-22-02): Wing Attachment Washers · Helio H-391B

### Matched by engine (Lycoming GO-435C&D series)

None in force.

## Information bulletins (advisory) (3 in force)

- [SAIB SW-18-31](https://openairdocs.org/saib/SW-18-31): NAVIGATION, ATTITUDE, AND DIRECTION DATA SYSTEM. Issued Nov 21, 2018
- [SAIB CE-18-14](https://openairdocs.org/saib/CE-18-14): Main Landing Gear: Improved inspection at Drag Brace Location. Issued May 9, 2018
- [SAIB CE-08-47](https://openairdocs.org/saib/CE-08-47): Wings - Attachment Fittings. Issued Sep 9, 2008

## NTSB investigations

None matched to N565JS.

## FAA accident and incident reports

None matched to N565JS.

## Service difficulty reports

None filed for this aircraft.

## Related

- Other Helio H-391B aircraft: https://openairdocs.org/model/helio-h-391b/aircraft.md
- STCs for the Helio H-391B: https://openairdocs.org/model/helio-h-391b/stcs.md
- The Lycoming GO-435C&D series engine: https://openairdocs.org/engine/lycoming-go-435c-d-series.md

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