Balloon

N421MT

1979 Thunder Balloons Limited AX7-77

Registered No accidents on file
Built
1979
Serial
180
Class
Balloon
Engines
None NONE
Status
Current as of October 2026
Registered owner
Wind Surfer Ballooning LLC (LLC)
Based
Carlisle, IA
Registration record

N421MT on the FAA register

Type
1979 Thunder Balloons Limited AX7-77
Serial
180
Engines
None NONE
Registered owner
Wind Surfer Ballooning LLC
Carlisle, IA
Certificate issued
2020-03-24
Airworthiness date
1979-04-18
Registration expires
2030-03-31
Airworthiness class
Standard · balloon
Mode S (hex)
A5007B
Mode S (octal)
51200173
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2030-03-31
    Registration expires (renewal due).
  • 2020-03-24
    Certificate of registration issued as N421MT.
  • 1979-04-18
    Airworthiness date on the current FAA record (standard category (balloon)).
Overview

About N421MT

N421MT is a 1979 Thunder Balloons Limited AX7-77, serial number 180. The FAA register lists Wind Surfer Ballooning LLC as the registrant in Carlisle, Iowa. The current certificate of registration was issued on March 24, 2020 and expires on March 31, 2030.

The FAA aircraft reference file describes the type as a balloon and 4 seats. Its airworthiness certificate is standard category (balloon), dated April 18, 1979.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N421MT.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N421MT.

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 Iowa· 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.