- Registered owner
- Sof Air Inc
- Location
- Ashland, OR
- Owner type
- Corporation
- Serial number
- 66-1229
- Year built
- 1966
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Restricted, agriculture and pest control, forest, other
- Airworthiness date
- July 27, 2006
- Certificate issued
- May 1, 2017
- Expires
- May 31, 2027
- Mode S code
- A8D68B
Tamarack Helicopters TH-1FTCDS H7NEAirframe · Tamarack Helicopters TH-1FEngine modelLycoming T53-L-13
From the FAA registry file of October 22, 2026.
On this page
Airworthiness directives that may apply · 8
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1997 | 1 |
|---|---|
| 2021 | 1 |
| 2022 | 5 |
| 2024 | 1 |
Airframe · Tamarack Helicopters TH-1F
AD 2024-19-17Rotorcraft flight controlAD 2022-20-14Main Rotor GearboxAD 2022-22-12Nose/Tail Landing Gear Structure/AxleAD 2022-21-11Main rotor bladesAD 2022-05-10Cabin Equipment/FurnishingsAD 2022-06-05Main Rotor SystemAD 2021-15-14Rotorcraft Tail BoomAD 97-01-06Tail Rotor SliderInformation bulletins that may apply
Advisory, not mandatory.
No bulletins matched this aircraft’s models
NTSB investigations
No NTSB investigations matched to N669KBMatched 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 Tamarack Helicopters TH-1F aircraft
FAA incident reports
No FAA accident or incident reports matched to N669KBMatched 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 Tamarack Helicopters TH-1F aircraft
Service difficulty reports
No reports matched to N669KBGeneral 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 Tamarack Helicopters TH-1F aircraft
STCs that may be installed · 11
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Tamarack Helicopters TH-1F
STC SR01349LAInstallation of Honeywell (Lycoming) T53-L-13B/-13BA engine to replace General Electric T58-GE-3 engine or T53-L-703 engine to replace Honeywell (Lycoming) T53-L-13B/-13BA engineSTC SR12332SEInstallation of Mechanical Specialties, LLC Human External Cargo (HEC) and non-HEC Hook SystemSTC SR02492LAInstallation of a Helicopter Technology Company main rotor blade assemblySTC SR00929SEFabrication of tail boom mounted strakes.STC SR01470SEFabrication and Installation of Fast Fin System.STC SR03408CHInstall Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-204-310-101-101 or AA-204-310-101-103STC SR02051LAInstallation of a VAn Horn Aviation Tail Rotor Blade.STC SR09257RCFabrication, modification, and installation of a new vertical fin spar in accordance with Global Helicopter Technology, Inc., Drawing number VTF-030-800, Revision D, dated March 26, 2001, or later FAA approved revision.STC SR00103SEInstallation of Aviation Development Corporation oil filterSTC SR01298NYInstallation of replacement crosstubes P/N D212-664.STC SR00563NYInstallation of Skidtubes and associated saddles