- Registered owner
- Siller Helicopters LLC
- Location
- Chamblee, GA
- Owner type
- LLC
- Serial number
- 61186
- Year built
- 1963
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Restricted, forest, other
- Airworthiness date
- March 3, 2014
- Certificate issued
- April 16, 2025
- Expires
- May 31, 2027
- Mode S code
- A363A6
Carson Helicopters / Sikorsky S61ATCDS H2EAAirframe · Carson Helicopters / Sikorsky S61ATCDS 1E3Engine · GE CT58-140-1
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 59
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1965 | 1 |
|---|---|
| 1966 | 2 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 4 |
| 1971 | 3 |
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 1 |
| 1980 | 2 |
| 1981 | 2 |
| 1983 | 2 |
| 1984 | 2 |
| 1985 | 1 |
| 1987 | 2 |
| 1989 | 2 |
| 1990 | 1 |
| 1991 | 2 |
| 1994 | 1 |
| 1997 | 3 |
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 2 |
| 2002 | 1 |
| 2004 | 1 |
| 2005 | 1 |
| 2008 | 2 |
| 2013 | 1 |
| 2015 | 2 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 1 |
| 2026 | 2 |
Airframe · Carson Helicopters / Sikorsky S61A
AD 2026-15-17Main Rotor GearboxAD 2026-11-05Rotorcraft flight control; Rotorcraft servo systemAD 2023-11-07Ground Proximity SystemInformation bulletins that may apply
Advisory, not mandatory.
No bulletins matched this aircraft’s models
NTSB investigations
No NTSB investigations matched to N3173UMatched 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 Carson Helicopters / Sikorsky S61A aircraft
FAA incident reports
No FAA accident or incident reports matched to N3173UMatched 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 Carson Helicopters / Sikorsky S61A aircraft
Service difficulty reports
No reports matched to N3173UGeneral 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 Carson Helicopters / Sikorsky S61A aircraft
STCs that may be installed · 39
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Carson Helicopters / Sikorsky S61A
STC SR00206NYInstallation of 11,000 pound capacity Cargo SlingSTC SR01858SEManufacture of the Isolair, Inc., Eliminator II Model 4600-S61 Fire Fighting SystemSTC SR00814SEFabrication of reinforcement kit - aft fuselage station 493. For model S61A, applies to S/N 61094. For model S61NM, applies to S/N 66454
Earlier aircraft with this N-number · 1
This aircraft carried N3173U before the one registered now. The FAA can assign a mark to another aircraft once a registration is cancelled.