Hiller H-23
8 on the U.S. register across 3 versions the FAA records separately. Built from 1942 to 1972; half of them date from 1959 or earlier. Texas has the most (4). 62% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are not named here at this time.
About the H-23 from the FAA's model table
- Type
- Rotorcraft · Helicopters
- Power
- Piston (reciprocating), 1 engine
- Common engines
- Lycoming Vo-435 Series (1), Franklin 6V4 Series (1), Franklin 6A4200 Series (1)
- Fuel
- 100LL avgas
- Seats
- 4
- Cruise speed
- about 75 mph
- Built of
- steel tube and aluminium
- Maker on the register
- Hiller
- Registered
- earliest certificate September 10, 1998; newest December 17, 2019
Where they are owner's state
Who owns them registrant type
By owner type, as a table
| aircraft | share | |
|---|---|---|
| Individual | 3 | 38% |
| Corporation | 3 | 38% |
| LLC | 2 | 25% |
Versions as the FAA records them · click one to list only those aircraft
When they were built by decade · 2 with no year on file
Airworthiness certificate class
Biggest operators companies, schools and clubs
Largest fleets, as a table
| aircraft | |
|---|---|
| Zaathof Aero LLC | 1 |
| Sarah Business LLC | 1 |
| Historic Aviation Memorial Museum | 1 |
| Fort Wolters Helicopter INC | 1 |
| Fort Wolters Helicopter | 1 |
Fleet pages: Sarah Business LLC · Fort Wolters Helicopter INC
Accident history NTSB records · 3 cases since 1982, 0 fatal
The 3 most recent of 3 cases where the NTSB's make and model match this family's versions. Each aircraft's own page also shows its record. How this model compares with others, with the fleet taken into account: Accidents by model in Aviation Analytics.
Questions people ask answers refresh every morning
How many Hiller H-23 aircraft are registered in the U.S.?
8 as of November 12, 2026, counting 3 versions the FAA records separately.
Which state has the most Hiller H-23s?
Texas, with 4.
Who owns the Hiller H-23?
62% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are not named on this site at this time.
When were the Hiller H-23s on the register built?
Between 1942 and 1972; half of them in 1959 or earlier.
How many Hiller H-23 accidents has the NTSB recorded?
3 accidents and incidents since 1982, 0 of them fatal. A model flown more shows more; the accident analytics compare models per thousand registered.
What is the Hiller H-23 made of?
A welded steel-tube frame carries the loads, with aluminium (and some fibreglass) skins over it. The FAA's type certificate data sheet is the authority for any one model.
What the FAA has certified, ordered and been told about the Hiller H-23 the component layer
A welded steel-tube frame carries the loads, with aluminium (and some fibreglass) skins over it. No FAA order in the current files names this model. Operators and repair shops have filed 1 failure report with the FAA since 1997, 1 of them in the last ten years: about 12.5 a year for every 100 aircraft on the register; the system most often named is rotorcraft systems.
Failure reports 1 since 1997 · what operators and shops told the FAA
Failure reports by year, as a table
| reports | |
|---|---|
| 97 | 1 |
By system
Failure reports by system, as a table
| reports | share | |
|---|---|---|
| Rotorcraft systems | 1 | 100% |
Parts most often reported as the reports name them
Latest reports
Approved replacement parts 1 parts manufacturer approvals
Parts a company other than the maker may make for this design and sell as FAA-approved. The companies holding the most:
Most often: fork (1).
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how the H-23 links to the rest of the register
- Hiller 242 aircraft on the register
- Hiller H-23D 6 registered
- Hiller H-23A 1 registered
- Hiller H-23B 1 registered
- Type certificate 6H1 · held by Siam Hiller Holdings INC
- Type certificate 6H2 · held by Siam Hiller Holdings INC
- Type certificate 4H10 · held by Siam Hiller Holdings INC
- Built of steel tube and aluminium
- Lycoming VO-435 series 1 of these aircraft · 260 hp
- Franklin 6V4 series 1 of these aircraft · 210 hp
- Franklin 6A4200 series 1 of these aircraft · 200 hp
- Zaathof Aero LLC 1 of these aircraft
- Sarah Business LLC 1 of these aircraft
- Historic Aviation Memorial Museum 1 of these aircraft
- Fort Wolters Helicopter INC 1 of these aircraft
- Fort Wolters Helicopter 1 of these aircraft
- NTSB accidents and incidents involving the H-23 3 cases since 1982 · 0 fatal
- Failure reports filed on the H-23 1 reports since 1995
The whole map of how records connect · these connections as data: /graph/model/hiller/h-23.json.
Aircraft newest certificates first · 8
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N67107 | Hiller H-23D |
Individual owner Montana |
None on file | 2019-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N64275 | Hiller H-23D |
Historic Aviation Memorial Museum Tyler, Texas |
None on file | 2018-03-29 | ValidFAA registration status code V: Valid registration. All codes |
| N48263 | Hiller H-23D |
Sarah Business LLC Merritt Island, Florida |
Multiple | 2011-10-11 | ValidFAA registration status code V: Valid registration. All codes |
| N4786C | Hiller H-23B |
Individual owner Minnesota |
Standard | 2008-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N94516 | Hiller H-23D |
Fort Wolters Helicopter INC Mineral Wells, Texas |
Standard | 2000-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N33472 | Hiller H-23D |
Individual owner Texas |
None on file | 1999-12-22 | ValidFAA registration status code V: Valid registration. All codes |
| N94517 | Hiller H-23D |
Fort Wolters Helicopter Mineral Wells, Texas |
None on file | 1998-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N3107G | Hiller H-23A |
Zaathof Aero LLC Foristell, Missouri |
Standard | ValidFAA registration status code V: Valid registration. All codes |