Staging copy. The live site is at https://staging.data.eflight.com.
eFlight RegistryFAA data, updated daily
Registered aircraft · FAA record as of September 25, 2026
N673BP

Riemer William V Jr CHALLENGER II

Valid Wisconsin

N673BP is a Riemer William V Jr CHALLENGER II, a fixed-wing airplane with one motor with a piston engine, built in 2008. It has 2 seats. It is registered to an individual in Ogdensburg, Wisconsin. The registration is valid: it was issued on August 15, 2005 and expires on February 29, 2028. It holds an experimental airworthiness certificate for amateur built, dated November 14, 2008.

Aircraft

Maker
Riemer William V Jr
Model
CHALLENGER II
Serial number
CH2 0702 2237
Type
Fixed-wing, single engine
Power
Piston (reciprocating), 1 motor · Rotax 503ULDCDI · 52 hp
Seats
2
Year built
2008
Kit
QUAD CITY ULTRALIGHT ACFT CORP CHALLENGER II
Transponder code
A8E704 (octal 52163404)

Registration

Status
Valid registration
Certificate issued
August 15, 2005
Expires
February 29, 2028
Last FAA action
April 21, 2023
Airworthiness
Experimental · Amateur built · November 14, 2008
FAA region
Great Lakes
FAA record id
00196459

Owner as the FAA publishes it

Name
Riemer William V JR
Type
Individual
Address
N5044 Elm Valley Rd
Ogdensburg, WI 54962-9608

Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.

Documents on file 0

No bills of sale, loans or other documents are indexed against this tail number.

Source: FAA Civil Aviation Registry, Releasable Aircraft Database, September 25, 2026. See this record on the FAA site · This record as data