- Registered owner
- Sibert Keith
- Location
- St Maries, ID
- Owner type
- Individual
- Serial number
- 3684
- Type
- Rotorcraft
- Engine
- Reciprocating
- Airworthiness
- Restricted, agriculture and pest control
- Airworthiness date
- May 26, 1989
- Certificate issued
- April 29, 2021
- Expires
- April 30, 2028
- Mode S code
- A6D588
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Lycoming VO-435 model are included below.
On this page
Airworthiness directives that may apply · 52
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1961 | 1 |
|---|---|
| 1962 | 1 |
| 1963 | 1 |
| 1965 | 1 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 2 |
| 1971 | 1 |
| 1972 | 1 |
| 1973 | 1 |
| 1974 | 2 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 1 |
| 1980 | 3 |
| 1981 | 3 |
| 1985 | 2 |
| 1987 | 1 |
| 1991 | 2 |
| 1996 | 1 |
| 1998 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2004 | 1 |
| 2005 | 1 |
| 2009 | 1 |
| 2012 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2026 | 1 |
See all 56 ADs
Information bulletins that may apply · 2
Advisory, not mandatory.
NTSB investigations
No NTSB investigations matched to N53990Matched 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 Bell 47G-3B-1 aircraft
Investigations on N53990 not matched to an aircraft · 1
They name N53990, but no registry record covers the date, the aircraft registered then was built later, or the investigation describes another aircraft.
FAA incident reports · 1
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Service difficulty reports
No reports matched to N53990General 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 Bell 47G-3B-1 aircraft
STCs that may be installed · 165
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Bell 47G-3B-1
STC SA800EAInstallation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power suppliesSTC SH100WEInstallation of fiberglass baggage carriers.STC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,