Robinson Helicopter R44 II
N4174L is a Robinson Helicopter R44 II, a rotorcraft with a piston engine (a helicopter or multicopter), built in 2008. It has 4 seats. It is registered to Cst & Sons LLC, an LLC in South Barrington, Illinois. The registration is valid: it was issued on December 23, 2016 and expires on December 31, 2029. It holds a standard airworthiness certificate for normal, dated June 14, 2021.
Aircraft
- Maker
- Robinson Helicopter (United States)FAA spelling: ROBINSON HELICOPTER COMPANY
- Model
- R44 II · all R44 IIs and related versions
- Serial number
- 12495
- Type
- Rotorcraft
- Power
- Piston (reciprocating), 1 motor · Lycoming IO-540-AE1A5 · 260 hp
- Seats
- 4
- Year built
- 2008
- Transponder code
- A4F110 (octal 51170420)
Registration
- Status
- Valid registration
- Certificate issued
- December 23, 2016
- Expires
- December 31, 2029
- Last FAA action
- September 22, 2023
- Airworthiness
- Standard · Normal · June 14, 2021
- FAA region
- Great Lakes
- FAA record id
- 01015973
Owner as the FAA publishes it
- Name
- Cst & Sons LLC
- Type
- LLC
- Address
- 21 Olympic Dr
South Barrington, IL 60010-1093
Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.
Documents on file 0
No bills of sale, loans or other documents are indexed against this tail number.
Earlier use of this number 1
Records check free · 3 to understand · 2 clear
The public federal record on N4174L, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.
Valid registration to Cst & Sons LLC, an LLC, certificate issued December 23, 2016, expires December 31, 2029. No fractional interest recorded. [1]
The airworthiness certificate on file is dated June 14, 2021, 13 years after the 2008 manufacture year. A re-issued certificate commonly follows export and re-import, a rebuild, or a return to the register after cancellation. The cause is documented in the FAA aircraft records file, which the full report obtains. [1]
No earlier tail number is recorded against serial 12495 for this model in the deregistered file. [2]
N4174L was previously assigned to 1 other aircraft: Cessna 172G (serial 17254243, cancelled November 23, 1993). Histories keyed to the tail number alone can mix aircraft up; this check keys on the serial number. [2]
No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]
2 NTSB records under N4174L: Accident on July 26, 2023 at Charles City, IA: no injuries, substantial damage. Accident on October 27, 1990 at Anacortes, WA: no injuries, substantial damage. Details below. [4]
These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
NTSB records 2
Aircraft on the NTSB record: Robinson Helicopter Company R44 II · operated under 091
The pilot’s improper preflight of the helicopter to ensure that it was within the loading and performance limitations that resulted in settling and impact with terrain during initial climb.
Search the NTSB's CAROL system for CEN23LA326 for the docket and final report. Open CAROL
Aircraft on the NTSB record: Cessna 172G · operated under 091
THE PILOT POORLY COMPENSATED FOR THE WIND CONDITION.
Search the NTSB's CAROL system for SEA91LA011 for the docket and final report. Open CAROL
- FAA Releasable Aircraft Database, master file, file of October 2, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 2, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through August 27, 2026. data.ntsb.gov/carol-main-public/basic-search
This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this record on the FAA site · This record as data