# N503AD: 1991 Air Tractor AT-503A, registration cancelled 2013-09-26

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 26, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Air Tractor AT-503A](https://openairdocs.org/model/air-tractor-at-503a) (registry code 0390304)
- Engine: [Pratt & Whitney PT6A series](https://openairdocs.org/engine/pratt-whitney-pt6a-series) (registry code 52032)
- Data sheets: [TCDS A17SW](https://openairdocs.org/tcds/A17SW) (OpenAirDocs)
- Serial number: 503A-0147
- Year built: 1991
- Type of aircraft: Fixed wing single engine
- Engine type: Turbo-prop
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: September 10, 1991
- Certificate issued: October 21, 2008
- Last registry action: March 15, 2011
- Mode S code: A64519
- Owner when cancelled: [Divlend Equipment Leasing LLC](https://openairdocs.org/faa-owner/DIVLEND%20EQUIPMENT%20LEASING%20LLC)
- Location: [Lubbock, TX](https://openairdocs.org/faa-place/TX/Lubbock)
- Owner type: Corporation
- Owner's area on the map: 33.5464° N, 101.8565° W: Placed by OpenAirDocs at the center of ZIP code 79412, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N503AD
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=503AD
- Page: https://openairdocs.org/deregistered/N503AD-2013-09-26

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Air Tractor AT-503A: https://openairdocs.org/model/air-tractor-at-503a.md

## NTSB investigations (1)

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 CEN11CA287](https://openairdocs.org/ntsb/CEN11CA287), Apr 13, 2011: Air Tractor AT503 (N503AD), Telephone, TX, substantial damage. Probable cause: The pilot's failure to maintain adequate airspeed which resulted in an aerodynamic stall.

## FAA accident and incident reports (1)

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 20110413006719A](https://openairdocs.org/incident/20110413006719A), Apr 13, 2011: Air Tractor Inc AT-503A (N503AD), Telephone, TX, Destroyed. Aircraft departed local Private Strip for 2nd flight of the day. Aircraft crashed into wooded area after takeoff. On scene investigation by ASI determined the…

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