# Air Tractor AT-504 - Type: Aircraft model (FAA registry) - Registry code: 0390310 - Manufacturer (registry): AIR TRACTOR INC - Model: AT-504 - Aircraft type: Fixed wing single engine - Category: Airplane - Engines: 1 · Turbo-prop - Seats: 2 - Weight class: Up to 12,499 lb - Certification: Type certificated - Data sheet: [TCDS A17SW](https://openairdocs.org/tcds/A17SW) (OpenAirDocs) - Holder: Air Tractor Inc. - Registered aircraft: 9 - Page: https://openairdocs.org/model/air-tractor-at-504 Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2021-05-14](https://openairdocs.org/ad/2021-05-14): TE flap control system · Air Tractor AT-250, AT-300, AT-301 and 19 more. Effective Apr 29, 2021 ## Information bulletins (advisory) (4) - [SAIB CE-18-06](https://openairdocs.org/saib/CE-18-06): Flight Controls, Rudder Control System. Issued Dec 1, 2017 - [SAIB CE-16-27](https://openairdocs.org/saib/CE-16-27): Flight Controls, Trailing Edge (TE) Flap Control System. Issued Oct 31, 2016 - [SAIB CE-11-41](https://openairdocs.org/saib/CE-11-41): Fuselage, Wing Attach Fittings. Issued Jun 29, 2011 - [SAIB CE-11-30](https://openairdocs.org/saib/CE-11-30): Aircraft Structures. Issued May 9, 2011 ## Registered aircraft (9) - [N148SH](https://openairdocs.org/aircraft/N148SH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2022, S/N 504-4044 - [N149SH](https://openairdocs.org/aircraft/N149SH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2022, S/N 504-4045 - [N173SH](https://openairdocs.org/aircraft/N173SH): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 2025, S/N 504-4057 - [N2033R](https://openairdocs.org/aircraft/N2033R): [Lj Leasing LLC](https://openairdocs.org/faa-owner/LJ%20LEASING%20LLC), [Cardington, OH](https://openairdocs.org/faa-place/OH/Cardington), built 2011, S/N 504-4010 - [N305AT](https://openairdocs.org/aircraft/N305AT): [Aircraft Trustee Services Inc Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20TRUSTEE%20SERVICES%20INC%20TRUSTEE), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover), S/N 504-4005 - [N3081Y](https://openairdocs.org/aircraft/N3081Y): [Jefferson Davis Parish Mosquito](https://openairdocs.org/faa-owner/JEFFERSON%20DAVIS%20PARISH%20MOSQUITO), [Jennings, LA](https://openairdocs.org/faa-place/LA/Jennings), built 2015, S/N 504-4027 - [N504AT](https://openairdocs.org/aircraft/N504AT): [Aerinova Aerial LLC](https://openairdocs.org/faa-owner/AERINOVA%20AERIAL%20LLC), [Mattoon, IL](https://openairdocs.org/faa-place/IL/Mattoon), built 2024, S/N 504-4054 - [N504DD](https://openairdocs.org/aircraft/N504DD): [Digger Doug'S Crop Dusting Service Inc](https://openairdocs.org/faa-owner/DIGGER%20DOUG'S%20CROP%20DUSTING%20SERVICE%20INC), [Hollandale, WI](https://openairdocs.org/faa-place/WI/Hollandale), built 2022, S/N 504-4042 - [N504HW](https://openairdocs.org/aircraft/N504HW): [Farm Air Flying Service LLC](https://openairdocs.org/faa-owner/FARM%20AIR%20FLYING%20SERVICE%20LLC), [Sacramento, CA](https://openairdocs.org/faa-place/CA/Sacramento), built 2024, S/N 504-4052 ## NTSB investigations (2) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB GAA25WA281](https://openairdocs.org/ntsb/GAA25WA281), Oct 9, 2024: Air Tractor AT-504 (N149SH), Gizan, Saudi Arabia, destroyed - [NTSB CEN20CA079](https://openairdocs.org/ntsb/CEN20CA079), Feb 8, 2020: Air Tractor AT-504 (N970FA), Fort Morgan, CO, substantial damage. Probable cause: The pilot's improper landing flare, which resulted in a bounced landing, and his subsequent failure to maintain directional control, which resulted in the left main landing gear tire bursting and the… ## FAA accident and incident reports (2) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20200208000759A](https://openairdocs.org/incident/20200208000759A), Feb 8, 2020: Air Tractor Inc AT-504 (N970FA), Ft. Morgan, CO, Substantial damage. The pilot lost control of the aircraft on landing. After a small bounce, the aircraft swung to the left. The pilot over corrected to the right and then to the… - [Incident 20100713042719I](https://openairdocs.org/incident/20100713042719I), Jul 13, 2010: Air Tractor AT-504 (N173JH), Titusville, FL, Minor damage. During the takeoff portion of an aircraft familiarization flight, [privacy data omitted] took the controls from [privacy data omitted], united arab emirates… ## STCs that may be installed (OpenAirDocs) (29) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SA04484CH](https://openairdocs.org/stc/SA04484CH): Installation of a Reabe Aircraft Improvement Power Gate Control System. Reabe Design LLC - [STC SA04837NY](https://openairdocs.org/stc/SA04837NY): Installation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lights. AeroLED's Holdings, LLC - [STC SA02019SE-D](https://openairdocs.org/stc/SA02019SE-D): Installation of Garmin Model GTN 625/635/650; 725/750 Navigation System. Garmin International Inc - [STC SA12204WI](https://openairdocs.org/stc/SA12204WI): Wing Spar Cap manufacturing process change. Air Tractor Inc - [STC SA03040CH](https://openairdocs.org/stc/SA03040CH): Installation of a digital payload hopper quantity and spray boom pressure indicating system. Reabe Design LLC - [STC SA04046CH PAGE 1](https://openairdocs.org/stc/SA04046CH%20PAGE%201): Installation of L-3 GENESIS (TM) Electronic Standby Instrument System (ESI-500/MAG-500). Acron Aviation Inc - [STC SA04676CH](https://openairdocs.org/stc/SA04676CH): Installation of a True Quantity Gauge System. Reabe Design LLC - [STC SA02266SE](https://openairdocs.org/stc/SA02266SE): Installation of a Lever Throttle Quadrant. Kawak Aviation Technologies Inc - [STC SA02444AK](https://openairdocs.org/stc/SA02444AK): Approval of the L-3 Communications NGT 9000/9000R ADS-B system installed. ADS-B Technologies LLC - [STC SA01714WI](https://openairdocs.org/stc/SA01714WI): Installation of a Garmin transponders: (a) GTX 330/330D/33/33D with ADS-B Out functionality; (b) GTX 335/335R/345/345R with ADS-B Out and In functionality; or (c) GTX 335R/345R with ADS-B Out functionality in select airplanes installed with G950/G1000 systems. Garmin International Inc - [STC SA02135SE](https://openairdocs.org/stc/SA02135SE): Installation of Electronics International Inc. Glass Panel Engine Monitor (with In-Flight Data). Electronics International Inc - [STC SA04165NY](https://openairdocs.org/stc/SA04165NY): Installation of Latitude Technologies Skynode S200 Satcom system must be performed. Latitude Technologies Corporation - [STC SA01323CH](https://openairdocs.org/stc/SA01323CH): Installation of a ground single point fueling system. Turbine Conversions Ltd - [STC SA04145NY](https://openairdocs.org/stc/SA04145NY): Installation of the Flight Data Acquisition Storage and Transmission System (Fast). Amtech Aeronautical Limited - [STC SA01745WI](https://openairdocs.org/stc/SA01745WI): Installation of a Cable Cutter System on the Main Landing Gear. Hershey Flying Service Inc - [STC SA01845WI](https://openairdocs.org/stc/SA01845WI): Installation of a Center Windshield. Hershey Flying Services - [STC SA09873AC](https://openairdocs.org/stc/SA09873AC): Installation of Night Vision Goggle (NVG) compatible lighting system in Air Tractor, Inc. REB Technologies Inc - [STC SA00382BO](https://openairdocs.org/stc/SA00382BO): Installation of Globalstar Antenna and Cradle provisions to support a Globalstar GPS-1700 in non-composite airplanes. Avidyne Corporation - [STC SA02276AK](https://openairdocs.org/stc/SA02276AK): Installation of AMSAFE Aviation Inflatable Restraints. AMSAFE Inc - [STC SA02119SE PAGE 1](https://openairdocs.org/stc/SA02119SE%20PAGE%201): Installation of Garmin GDL 88 ADS-B UAT Transceiver System. Garmin International Inc - [STC SA03439CH](https://openairdocs.org/stc/SA03439CH): Installation of a Hartzell Propeller model .HC-B4TN-3C/T10702NS (4 Blade). Aero Innovations LLC - [STC SA02442AK PAGE 1](https://openairdocs.org/stc/SA02442AK%20PAGE%201): Approval of the L-3 Communications NGT 2000/2500 ADS-B system. ADS-B Technologies, LLC - [STC ST03554CH](https://openairdocs.org/stc/ST03554CH): Installation of Rotary Gatekeeper and provisions equipment. Turbine Conversions Ltd - [STC SA00403SE](https://openairdocs.org/stc/SA00403SE): Installation of Vortex Generators on the wings. Micro AeroDynamics Inc - [STC SA02985CH](https://openairdocs.org/stc/SA02985CH): Installation of a Cool Start System in accordance with Installation Instructions , Revision A, dated April 14, 2011, or later FAA Approved revision. Turbine Conversions Ltd - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc - [STC SA02110CH](https://openairdocs.org/stc/SA02110CH): Installation of a Time Trac Data Recorder. P2 Incorporated - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SA04677CH](https://openairdocs.org/stc/SA04677CH): Installation of a Powered Hopper Lid and Auger System. Reabe Design LLC --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.