N4556S — 1991 Air Tractor Inc AT-502
DeregisteredChecked against FAA & NTSB records · as of Aug 29, 2026
N4556S appears in 1 NTSB accident record (most recent 2012, no injuries). Registration and accident data compiled from public FAA and NTSB records as of Aug 29, 2026.
Aircraft record
- Serial number
- 502-0137
- Manufacturer
- Air Tractor Inc
- Model
- AT-502
- Year
- 1991
- Category
- Fixed wing single-engine
- Engine
- P&w Pt6a Ser
- Registration
- Deregistered
Accident & incident history
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.
Registration timeline
Ownership and registration events for this airframe (the 1991 Air Tractor Inc AT-502).
- Jan 4, 2018deregistered — Thiel Air Care Inc
Frequently asked
- Has N4556S been in an accident?
- Yes. N4556S appears in 1 NTSB accident record, the most recent in 2012.
- What kind of aircraft is N4556S?
- N4556S is a 1991 Air Tractor Inc AT-502 (fixed wing single-engine), serial number 502-0137.
The full N4556S report
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- Complete registration & deregistration timeline, print-ready
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