# N420DM: 2006 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 05901QS, 2 seats)
- Engine: [Rotax 503 series](https://openairdocs.org/engine/rotax-503-series) (registry code 55564)
- Serial number: CW-1540
- Year built: 2006
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: November 11, 2006
- Certificate issued: July 29, 2026
- Expires: July 31, 2033
- Mode S code: A4FBF6
- Registered owner: [Deckard Jerry E](https://openairdocs.org/faa-owner/DECKARD%20JERRY%20E)
- Location: [Neelyville, MO](https://openairdocs.org/faa-place/MO/Neelyville)
- Owner type: Individual
- Owner's area on the map: 36.5789° N, 90.4738° W: Placed by OpenAirDocs at the center of ZIP code 63954, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=420DM
- Page: https://openairdocs.org/aircraft/N420DM

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. The registry lists only the engine series, so ADs for every Rotax 503 model are included.

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

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

None in force.

### Matched by engine (Rotax 503 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N420DM.

## FAA accident and incident reports

None matched to N420DM.

## 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.

## Service difficulty reports on N420DM not matched to an aircraft (1)

They name N420DM, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR FCPR200500001](https://openairdocs.org/sdr/FCPR200500001), Dec 23, 2004: SEAL. DISLODGED. CUSTOMER REPOARTS UNUSUAL SMELL FROM TAILCONE. INSPECTED BLEAD AIR LINES. FOUND PERI-SEAL CONNECTING L/H FLOW CONTROL VALVE TO WINDSHIELD BLEED AIR COUPLING LEA

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

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

---
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.