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Registered aircraft · FAA record as of October 27, 2026Thunder Balloons Limited AX7-77
N421MT is a Thunder Balloons Limited AX7-77, a balloon with no engine, built in 1979. It has 4 seats. It is registered to Wind Surfer Ballooning LLC, an LLC in Carlisle, Iowa. The registration is valid: it was issued on March 24, 2020 and expires on March 31, 2030. It holds a standard airworthiness certificate for balloon, dated April 18, 1979.
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Flight history: where it flew in the last seven days · follow it on the live map
Aircraft
- Maker
- Thunder Balloons Limited
- Model
- AX7-77 · all AX7-77s and related versions
- Built of
- fabric and wickerA hot-air balloon: a coated nylon envelope, stainless-steel cables, and a wicker or aluminium basket under a propane burner. This is how the Thunder Balloons Limited AX7 family is built; the FAA does not record construction for each aircraft, and the type certificate data sheet is the authority for this one.
- Serial number
- 180
- Type
- BalloonFAA type of aircraft code 2 (the FAA's broad category for the airframe). Every aircraft with this code · All codes
- Power
- NoneFAA type of engine code 0 (what powers it, as the FAA classes engines). Every aircraft with this code · All codes · None NONE
- Seats
- 4
- Year built
- 1979
- Cruising speed
- 22 mph
- Transponder code
- A5007B (octal 51200173)
Registration
- Status
- Valid registrationFAA registration status code V (whether the registration certificate is in force). Every aircraft with this code · All codes
- Certificate issued
- March 24, 2020
- Expires
- March 31, 2030
- Last FAA action
- October 13, 2023
- Airworthiness
- StandardFAA airworthiness class code 1 (the kind of airworthiness certificate it flies under and what it is approved for). Every aircraft with this code · All codes · BalloonFAA certificate purpose code B (the kind of airworthiness certificate it flies under and what it is approved for). All codes · April 18, 1979
- FAA region
- CentralFAA region code 3 (the FAA regional office that handles the record). All codes
- FAA record id
- 00021694
Owner as the FAA publishes it
- Name
- Wind Surfer Ballooning LLC
- Type
- LLCFAA type of owner code 7 (who holds the registration: a person, a company, a trust or a government body). Every aircraft with this code · All codes
- Address
- 3002 183Rd Ave
Carlisle, IA 50047-5456
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.
Connections how N421MT links to the rest of the register
- Thunder Balloons Limited AX7 10 registered
- Thunder Balloons Limited 14 aircraft on the register
- Built of fabric and wicker · as the model family is built; the register does not record it per aircraft
- Wind Surfer Ballooning LLC 8 aircraft in the fleet
- Carlisle, IA 31 aircraft registered in this town
- Iowa 4,506 aircraft registered
- FAA orders naming the Thunder Balloons Limited AX7 2 airworthiness directives
- Approved modifications for the Thunder Balloons Limited AX7 9 supplemental type certificates
The whole map of how records connect · these connections as data: /graph/aircraft/N421MT.json.
Records check free · 0 to understand · 5 clear
The public federal record on N421MT, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.
Valid registration to Wind Surfer Ballooning LLC, an LLC, certificate issued March 24, 2020, expires March 31, 2030. No fractional interest recorded. [1]
Standard certificate for balloon, dated April 18, 1979, consistent with the 1979 manufacture year. [1]
No earlier tail number is recorded against serial 180 for this model in the deregistered file. [2]
No other airframe has carried N421MT according to the deregistered file. [2]
No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]
No NTSB investigation records located under N421MT. CLEAR means the query ran and returned nothing, not that nothing ever happened. [4]
These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
- FAA Releasable Aircraft Database, master file, file of October 27, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 27, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 27, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through September 30, 2026. data.ntsb.gov/carol-main-public/basic-search
This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 27, 2026. See this record on the FAA site · This record as data