# N503DB: 2007 Quad City Ultralights CHALLENGER II

- Status: Valid registration
- Airframe: [Quad City Ultralights CHALLENGER II](https://openairdocs.org/model/quad-city-ultralights-challenger-ii) (registry code 05902TY, 2 seats)
- Engine: [Rotax 503 DCDI](https://openairdocs.org/engine/rotax-503-dcdi) (registry code 55566)
- Serial number: CH2-0397-1586
- Year built: 2007
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: January 28, 2010
- Certificate issued: June 9, 2016
- Expires: June 30, 2029
- Mode S code: A64562
- Registered owner: [Torres Kilgore Pablo L](https://openairdocs.org/faa-owner/TORRES%20KILGORE%20PABLO%20L)
- Location: [Orlando, FL](https://openairdocs.org/faa-place/FL/Orlando)
- Owner type: Individual
- Owner's area on the map: 28.4899° N, 81.2902° W: Placed by OpenAirDocs at the center of ZIP code 32822, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=503DB
- Page: https://openairdocs.org/aircraft/N503DB

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Quad City Ultralights CHALLENGER II)

None in force.

### Matched by engine (Rotax 503 DCDI)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N503DB.

## 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.

- [Incident 20160228004379I](https://openairdocs.org/incident/20160228004379I), Feb 28, 2016: Quad City Ultralights CHALLENGER II (N503DB), Defuniak Spring, FL, Minor damage. On Sunday February 28 of 2016 (2:30PM) local time, (8:30) utc/gmt at Defuniak Springs municipal airport (54J). Aircraft N503DB touched down and suddenly the…

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N503DB

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N503DB before.

- [Cancelled 2002-05-20](https://openairdocs.org/deregistered/N503DB-2002-05-20): Batman Wilbur D CHALLENGER II, S/N 90CW0554, built 1991. Triennial form not returned. Owner: [Hinricks James M](https://openairdocs.org/faa-owner/HINRICKS%20JAMES%20M), [Shoreview, MN](https://openairdocs.org/faa-place/MN/Shoreview)
- [Cancelled 1990-08-14](https://openairdocs.org/deregistered/N503DB-1990-08-14): Batman Wilbur D CHALLENGER II, S/N CH20586B0198. Triennial form not returned

## Related

- Other Quad City Ultralights CHALLENGER II aircraft: https://openairdocs.org/model/quad-city-ultralights-challenger-ii/aircraft.md
- The Rotax 503 DCDI engine: https://openairdocs.org/engine/rotax-503-dcdi.md

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