Single-engine piston

N1666R

2008 Homebuilt Challenger II

Registered 1 NTSB/FAA record
Built
2008
Serial
CH2-0899-1897
Class
Single-engine piston
Engines
Rotax 503 DCDI
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Hillsborough, NH
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Registration record

N1666R on the FAA register

Type
2008 Homebuilt Challenger II
Serial
CH2-0899-1897
Engines
Rotax 503 DCDI
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Hillsborough, NH
Certificate issued
2024-10-30
Airworthiness date
2008-11-07
Registration expires
2031-10-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A10B32
Mode S (octal)
50205462
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2031-10-31
    Registration expires (renewal due).
  • 2024-11-20
    Accident at Concord, NH; damage: substantial.
  • 2024-10-30
    Certificate of registration issued as N1666R.
  • 2008-11-07
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N1666R

N1666R is a 2008 Homebuilt Challenger II, serial number CH2-0899-1897. It is registered to an individual in Hillsborough, New Hampshire. The current certificate of registration was issued on October 30, 2024 and expires on October 31, 2031.

The FAA aircraft reference file describes the type as a single-engine piston, one Rotax 503 DCDI engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated November 7, 2008.

N1666R has 1 accident/incident record on file (most serious damage: substantial); details are below. 2 earlier records involve a different aircraft that carried the same N-number.

Safety record

Accident & incident history

2024-11-20 Accident · Concord, NH Damage: Substantial NTSB · ERA25LA063
Reported aircraft: Holtz Rodney R Challenger II
Probable cause: The pilot s failure to maintain directional control and eventual stall/mush of the airplane while trying to secure an open door in flight.
NTSB report ↗
2018-07-23 Accident · Oshkosh, WI Damage: Substantial NTSB · CEN18CA291
Reported aircraft: Quad City Challenger — a different aircraft that carried the N1666R registration before this airframe.
Probable cause: The pilot s failure to maintain adequate airspeed during the base to final turn and his exceedance of the airplane s critical angle of attack, which resulted in an aerodynamic stall.
2004-08-12 Accident · New Braunfels, TX Damage: Substantial NTSB · FTW04LA213
Reported aircraft: Cessna A185F — a different aircraft that carried the N1666R registration before this airframe.
Probable cause: The pilot's inadequate compensation for wind and his failure to maintain directional control. A contributing factor was the crosswind.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Browse: Aircraft registered in New Hampshire· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.