N4556S is not currently registered. It was last assigned to an Air Tractor Inc AT-502 built in 1991. The FAA cancelled the registration on January 4, 2018. The last status on file was "registration expired, pending cancellation".
Air Tractor Inc AT-502 cancelled January 4, 2018
- Serial number
- 502-0137
- Type
- Fixed-wing, single engine · Turboprop
- Year built
- 1991
- Last status
- Registration expired, pending cancellation
- Certificate issued
- June 5, 2007
- Last FAA action
- November 10, 2011
- Last owner
- Thiel Air Care INC (Corporation)
Chowchilla, CA - Airworthiness
- Restricted · Agriculture and pest control
NTSB accident and incident record under N4556S
Aircraft on the NTSB record: Air Tractor INC AT-502 · serial 502-0137
The pilot’s decision to continue the takeoff after the engine stopped producing its full-rated torque while operating in high-density altitude conditions and his subsequent failure to maintain clearance from the power transmission wires.
A tail number passes between aircraft over the years; match the serial number on the NTSB record against the airframe above. Source: NTSB aviation accident database, records through September 30, 2026.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this number on the FAA site