Piston helicopter

N9971B

2008 Homebuilt Monarch Butterfly

Registered No accidents on file
Built
2008
Serial
SB002
Class
Piston helicopter
Engines
Rotax 582SER
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Ehco, LA
What's N9971B worth? Track flights
Registration record

N9971B on the FAA register

Type
2008 Homebuilt Monarch Butterfly
Serial
SB002
Engines
Rotax 582SER
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Ehco, LA
Certificate issued
2018-07-26
Airworthiness date
2008-10-23
Registration expires
2028-07-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
ADEF21
Mode S (octal)
53367441
Seats (type)
1
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2028-07-31
    Registration expires (renewal due).
  • 2018-07-26
    Certificate of registration issued as N9971B to the current registrant.
  • 2008-10-23
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 2008-08-22
    N9971B previously assigned to a Homebuilt Benson (s/n SB001); cancelled.
Overview

About N9971B

N9971B is a 2008 Homebuilt Monarch Butterfly, serial number SB002. It is registered to an individual in Ehco, Louisiana. The current certificate of registration was issued on July 26, 2018 and expires on July 31, 2028.

The FAA aircraft reference file describes the type as a piston helicopter, one Rotax 582SER engine and 1 seats. Its airworthiness certificate is experimental category (amateur-built), dated October 23, 2008.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N9971B.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N9971B.

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

Same state

Other aircraft registered in Louisiana

N9960E
Cessna 172N Skyhawk / 172 Skyhawk / 172/180 Conversion
N9961E
1979 Cessna 172N Skyhawk
N996GA
2000 Gulfstream GV
N99790
1946 Ercoupe 415-C
N997RR
Homebuilt P150
N9985B
1982 Cessna 172RG Cutlass
All 3,734 aircraft registered in Louisiana →
Similar aircraft

Other piston helicopters on the register

  • N2140H2008 Schweizer 269C Piston Helicopters
  • N6032E1996 Hiller UH-12E
  • N202SL1969 Hughes TH55A
  • N100HT2010 Bell 47G-2
  • N2034Z2008 Schweizer 300CBI Piston Helicopters
  • N47GR1974 Bell 47G-3B-1

Own N9971B?

Get a free valuation, digitize the logbooks, or list it on fyiAero.

Free valuation Logbook transcription

Browse: Aircraft registered in Louisiana· 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.