The U.S. aircraft register, updated daily · Carbon Free Flight by 2050
Models · Hph Spol Sro · Piston singles · data as of October 2, 2026

Hph Spol Sro HPH 304

6 on the U.S. register. Built from 2022 to 2025; half of them date from 2023 or earlier. Texas has the most (1). 33% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are never named here.

About the HPH 304 from the FAA's model table

Type
Fixed-wing, single engine · Piston singles
Power
Two-cycle piston, 1 engine
Common engines
Solo 2625 02 (4), Solo 2625 01 (1)
Seats
1
Maker on the register
Hph Spol Sro
Registered
earliest certificate December 8, 2022; newest April 21, 2025

Where they are owner's state

Texas1Pennsylvania1Oregon1New Jersey1New Hampshire1Idaho1

Who owns them registrant type

Individual4 (67%)LLC2 (33%)

Versions as the FAA records them · click one to list only those aircraft

VersionRegisteredBuiltShare
HPH 304TS62022 to 2025100.0%

When they were built by decade · 1 with no year on file

0124552020

Registrations by year certificates issued since 2010, including changes of owner · 2026 is the year so far

00122120222202322025

Registration status

Valid5 (83%)Sale reported1 (17%)

Airworthiness certificate class

Experimental5 (83%)None on file1 (17%)

Biggest operators companies, schools and clubs

Pittsburgh Twin Shark Flight Academy LLC1Hph Sailplanes USA LLC1

Accident history NTSB records · 0 cases since 1982, 0 fatal

No NTSB accident or incident records match this family's versions. Each aircraft's own page also shows its record.

Questions people ask answers refresh every morning

How many Hph Spol Sro HPH 304 aircraft are registered in the U.S.?

6 as of October 2, 2026, counting 1 version the FAA records separately.

Which state has the most Hph Spol Sro HPH 304s?

Texas, with 1.

Who owns the Hph Spol Sro HPH 304?

33% 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 · 6 HPH 304TS (all versions)

Tail no.Maker and modelOwner and baseCertificateRegisteredStatus
N304TS Hph Spol Sro
HPH 304TS
Individual owner
New Jersey
Experimental 2025-04-21 Valid
N229MR Hph Spol Sro
HPH 304TS
Individual owner
Texas
Experimental 2025-03-03 Valid
N43TS Hph Spol Sro
HPH 304TS
Pittsburgh Twin Shark Flight Academy LLC
Bethel Park, Pennsylvania
Experimental 2023-12-04 Valid
N479BH Hph Spol Sro
HPH 304TS
Individual owner
New Hampshire
Experimental 2023-07-10 Valid
N71HA Hph Spol Sro
HPH 304TS
Hph Sailplanes USA LLC
Eagle, Idaho
Experimental 2022-12-08 Valid
N543TS Hph Spol Sro
HPH 304TS
Individual owner
Oregon
None on file Sale reported