Helio H-391
16 on the U.S. register. Built from 1954 to 1958; half of them date from 1956 or earlier. Michigan has the most (4). 12% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are never named here.
About the H-391 from the FAA's model table
- Type
- Fixed-wing, single engine · Piston singles
- Power
- Piston (reciprocating), 1 engine
- Common engines
- Lycoming Go-435C&D Ser (8), Lycoming Go-435 (5), Lycoming Go-435-C2B2 (1)
- Seats
- 4
- Cruise speed
- about 117 mph
- Maker on the register
- Helio
- Registered
- earliest certificate March 3, 1978; newest September 17, 2026
Where they are owner's state
Michigan4Washington3Alaska3Vermont2California2Florida1Colorado1
Who owns them registrant type
Individual13 (81%)LLC2 (12%)Co-owned1 (6%)
Versions as the FAA records them · click one to list only those aircraft
| Version | Registered | Built | Share |
|---|---|---|---|
| H-391B | 16 | 1954 to 1958 | 100.0% |
When they were built by decade · 4 with no year on file
Registrations by year certificates issued since 2010, including changes of owner · 2026 is the year so far
Registration status
Valid15 (94%)Pending1 (6%)
Airworthiness certificate class
Standard13 (81%)None on file2 (12%)Multiple1 (6%)
Biggest operators companies, schools and clubs
N62Hc LLC1Discovery Bay Aviation LLC1
Accident history NTSB records · 10 cases since 1982, 0 fatal
2025-08-18CEN25LA325 · H-391B N4431U · accident near Monroe, MI · no injuries
2003-07-07ANC03LA070 · H-391B N17081 · accident near Big Lake, AK · no injuries
2002-05-24DEN02LA048 · H-391B N25BA · accident near Cheyenne, WY · no injuries
2001-06-02ANC01LA066 · H-391B N25BA · accident near Anvik, AK · no injuries
1992-08-26SEA92LA191 · H-391B N4431U · accident near Edmonds, WA · no injuries
1990-09-13ANC90LA178 · H-391B N316HW · accident near Circle, AK · no injuries
1989-11-20CHI90LA031 · H-391B N8750R · accident near Plainwell, MI · no injuries
1985-12-06DEN86LA040 · H-391B N4101D · accident near Bozeman, MT · no injuries
The 8 most recent of 10 cases where the NTSB's make and model match this family's versions. Rates per registered aircraft, phases of flight and causes are coming with the analytics stage. Each aircraft's own page also shows its record.
Questions people ask answers refresh every morning
How many Helio H-391 aircraft are registered in the U.S.?
16 as of October 2, 2026, counting 1 version the FAA records separately.
Which state has the most Helio H-391s?
Michigan, with 4.
Who owns the Helio H-391?
12% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are never named on this site.
Aircraft newest certificates first · 16 H-391B (all versions)
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N565JS | Helio H-391B |
Individual owner Alaska |
Standard | 2026-09-17 | Valid |
| N62HC | Helio H-391B |
N62Hc LLC Nunica, Michigan |
None on file | 2025-09-15 | Valid |
| N10CJ | Helio H-391B |
Individual owner Alaska |
Standard | 2024-05-23 | Valid |
| N173K | Helio H-391B |
Individual owner Alaska |
Standard | 2023-09-07 | Valid |
| N289LM | Helio H-391B |
Individual owner Colorado |
Standard | 2023-01-17 | Valid |
| N4120D | Helio H-391B |
Individual owner Vermont |
Multiple | 2022-10-19 | Valid |
| N242B | Helio H-391B |
Individual owner Vermont |
Standard | 2022-09-16 | Valid |
| N4138D | Helio H-391B |
Co-owned owner California |
Standard | 2022-05-10 | Valid |
| N12620 | Helio H-391B |
Individual owner Michigan |
Standard | 2020-08-08 | Valid |
| N4139D | Helio H-391B |
Individual owner Washington |
Standard | 2014-12-15 | Valid |
| N8750R | Helio H-391B |
Discovery Bay Aviation LLC Port Townsend, Washington |
Standard | 2014-03-14 | Valid |
| N888W | Helio H-391B |
Individual owner California |
Standard | 2000-02-17 | Valid |
| N4431U | Helio H-391B |
Individual owner Michigan |
None on file | 1997-03-31 | Valid |
| N4119D | Helio H-391B |
Individual owner Michigan |
Standard | 1978-09-12 | Valid |
| N4123D | Helio H-391B |
Individual owner Washington |
Standard | 1978-03-03 | Valid |
| N4121D | Helio H-391B |
Individual owner Florida |
Standard | Pending |