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Public Record · As of May 5, 2026

N4704J

Quad City Ultralight Acft CHALLENGER II · 2006 View Type →

Status

Registration Valid

Type

Fixed Wing Single Engine

Engine

ROTAX 503ULDCDI

Last Cert Issue

—

Aircraft Resources

Engine · Rotax Aircraft Engines → Search FAA TCDS for QUAD CITY ULTRALIGHT ACFT CORP CHALLENGER II →

01 /  Registration

Filed with the Federal Aviation Administration

Every cell below is a literal field from the FAA Aircraft Registry. Click any value to open the FAA registry record for N4704J.

Tail Number

N4704J

Serial Number

CH2-1005-2688

Make

QUAD CITY ULTRALIGHT ACFT CORP

Model

CHALLENGER II

Year of Manufacture

2006

Mfr / Model Code

05631V6

Type Aircraft

Fixed Wing Single Engine

Type Engine

2-Cycle

Engines

1

Seats

2

Engine Manufacturer

ROTAX

Engine Model

503ULDCDI

Horsepower

52 hp

Weight Class

CLASS 1

Certification

Experimental (+1 flag) · code 42

Registrant

JILEK BRADLEY J · Individual

Address

N9336 TOWNLINE RD · BIRCHWOOD, WI 54817-9516

FAA Region

Central · County 129

Status

Registration Valid

Airworthiness Date

—

Cert Issue Date

—

Expiration Date

—

Last FAA Action

—

Mode S Hex (ICAO24)

A5C407

Mode S (Octal)

51342007

Kit Manufacturer

QUAD CITY ULTRALIGHT ACFT CORP

Kit Model

CHALLENGER II

Live position via ICAO24 A5C407

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External services. Live tracks are unaffiliated with TallyAero or the FAA.

02 /  NTSB Records

Events on file with the National Transportation Safety Board

03 /  Airworthiness Directives

Applicable to QUAD CITY ULTRALIGHT ACFT CORP CHALLENGER II

Federal Aviation Administration airworthiness directives matched to make and model. Each entry links to the Federal Register publication.

No matching airworthiness directives are on file for this make and model in the Federal Register.

04 /  Service Difficulty Reports

FAA SDR filings

The FAA does not currently expose a public API for Service Difficulty Reports. We do not back-fill or paraphrase. Search the FAA SDR portal directly →

05 /  Related

More on Quad City Ultralight Acft CHALLENGER II in the Atlas

Quad City Ultralight Acft CHALLENGER II type page → — 338 registered · 81 NTSB records

Other Quad City Ultralight Acft CHALLENGER II aircraft

N10059 N10091 N1017K N1021V N10260 N104HT N104SB N10578

Recent NTSB events · this type

Search the full US registry → · All airworthiness directives → · Accident & safety surface →

06 /  Sources & Methodology

Every fact on this page links to its primary US-government source

We render only what the agency publishes. Found a factual error? Report it → We acknowledge within 5 business days and resolve within 14.