- Registered owner
- Teufel Nursery Inc
- Location
- Hillsboro, OR
- Owner type
- Corporation
- Serial number
- 001
- Year built
- 1968
- Type
- Fixed wing single engine
- Engine
- Turbo-prop
- Airworthiness
- Standard, normal
- Airworthiness date
- October 9, 1996
- Certificate issued
- April 27, 2021
- Expires
- April 30, 2028
- Mode S code
- A7001F
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Pratt & Whitney PT6A model are included below.
On this page
Airworthiness directives that may apply · 28
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1968 | 1 |
|---|---|
| 1969 | 1 |
| 1970 | 1 |
| 1975 | 1 |
| 1977 | 1 |
| 1978 | 2 |
| 1979 | 1 |
| 1980 | 2 |
| 1986 | 1 |
| 1990 | 1 |
| 1992 | 1 |
| 1994 | 1 |
| 1995 | 1 |
| 1997 | 1 |
| 2001 | 1 |
| 2002 | 1 |
| 2005 | 2 |
| 2011 | 2 |
| 2012 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2022 | 1 |
| 2024 | 1 |
Engine · Pratt & Whitney PT6A series
AD 2024-04-51Turbine SectionEmergency ADInformation bulletins that may apply · 6
Advisory, not mandatory.
Airframe · Helio HST-550A
SAIB SW-18-31Navigation, Attitude, and Direction Data SystemNTSB investigations
No NTSB investigations matched to N550HEMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Helio HST-550A aircraft
FAA incident reports
No FAA accident or incident reports matched to N550HEMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Helio HST-550A aircraft
Service difficulty reports
No reports matched to N550HEGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Helio HST-550A aircraft
STCs that may be installed · 106
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Helio HST-550A
STC SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).STC SA01800SEFabrication and installation of new or replacement of existing instrument panel lights dimmer control.STC SA01861SEFabrication and installation of Landing Light Controller