Apparatus

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sensors Mode-S transponder

A129BA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N174TH · CESSNA 172 Skyhawk · operated by GH174TH LLC

Hex
A129BA
Octal
50224672
Decimal
10,561,978
Country
US
Tail
N174TH
Type
C172
No current signal · last broadcast 9h ago
Flights observed
101
Distinct callsigns
1
Country
US
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S A129BA.

Country allocation

The ICAO 24-bit address A129BA falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N174TH - 101 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-05 N174TH ORL → ORL Jun 5, 12:40 UTCJun 5, 13:30 UTC50m
2026-06-05 N174TH ORL → ORL Jun 5, 10:25 UTCJun 5, 11:50 UTC1h 25m
2026-06-05 N174TH ORL → ORL Jun 5, 00:40 UTCJun 5, 02:20 UTC1h 40m
2026-06-04 N174TH ORL → ORL Jun 4, 19:10 UTCJun 4, 19:30 UTC20m
2026-06-04 N174TH ORL → ORL Jun 4, 18:50 UTCJun 4, 19:05 UTC15m
2026-06-04 N174TH ORL → ORL Jun 4, 14:40 UTCJun 4, 15:35 UTC55m
2026-06-04 N174TH - Jun 4, 02:45 UTCJun 4, 03:05 UTC20m
2026-06-03 N174TH - Jun 3, 22:35 UTCJun 3, 23:45 UTC1h 10m
2026-06-03 N174TH ORL → ORL Jun 3, 18:35 UTCJun 3, 19:25 UTC50m
2026-06-03 N174TH ORL → ORL Jun 3, 16:35 UTCJun 3, 17:40 UTC1h 5m
2026-06-03 N174TH ORL → ORL Jun 3, 14:30 UTCJun 3, 15:35 UTC1h 5m
2026-06-02 N174TH ORL → ORL Jun 2, 18:15 UTCJun 2, 19:20 UTC1h 5m
2026-06-02 N174TH ORL → ORL Jun 2, 14:10 UTCJun 2, 15:45 UTC1h 35m
2026-06-01 N174TH ORL → ORL Jun 1, 12:50 UTCJun 1, 13:55 UTC1h 5m
2026-05-31 N174TH ORL → ORL May 31, 12:45 UTCMay 31, 14:15 UTC1h 30m
2026-05-31 N174TH - May 31, 00:50 UTCMay 31, 01:11 UTC21m
2026-05-30 N174TH ORL → ORL May 30, 19:05 UTCMay 30, 19:35 UTC30m
2026-05-30 N174TH ORL → ORL May 30, 16:45 UTCMay 30, 17:50 UTC1h 5m
2026-05-30 N174TH ORL → ORL May 30, 14:45 UTCMay 30, 15:40 UTC55m
2026-05-30 N174TH ORL → ORL May 30, 12:15 UTCMay 30, 13:45 UTC1h 30m
2026-05-30 N174TH ORL → ORL May 30, 10:35 UTCMay 30, 11:25 UTC50m
2026-05-29 N174TH ORL → ORL May 29, 16:35 UTCMay 29, 17:40 UTC1h 5m
2026-05-29 N174TH ORL → ORL May 29, 11:50 UTCMay 29, 13:15 UTC1h 25m
2026-05-28 N174TH - May 28, 14:35 UTCMay 28, 15:10 UTC35m
2026-05-25 N174TH ORL → ISM May 25, 15:40 UTCMay 25, 16:00 UTC20m
2026-05-23 N174TH ORL → ORL May 23, 17:15 UTCMay 23, 18:20 UTC1h 6m
2026-05-23 N174TH - May 23, 14:45 UTCMay 23, 16:00 UTC1h 15m
2026-05-23 N174TH ORL → ORL May 23, 12:30 UTCMay 23, 13:45 UTC1h 15m
2026-05-22 N174TH ORL → ORL May 22, 14:20 UTCMay 22, 15:20 UTC1h 0m
2026-05-21 N174TH ORL → ORL May 21, 16:20 UTCMay 21, 17:20 UTC1h 0m
2026-05-21 N174TH ORL → ORL May 21, 12:30 UTCMay 21, 13:35 UTC1h 5m
2026-05-20 N174TH ORL → ORL May 20, 18:40 UTCMay 20, 19:35 UTC55m
2026-05-20 N174TH ORL → ORL May 20, 17:00 UTCMay 20, 17:50 UTC50m
2026-05-18 N174TH ORL → ORL May 18, 20:30 UTCMay 18, 21:40 UTC1h 10m
2026-05-18 N174TH ORL → ORL May 18, 18:35 UTCMay 18, 19:25 UTC50m
2026-05-18 N174TH ORL → ORL May 18, 16:50 UTCMay 18, 17:55 UTC1h 5m
2026-05-18 N174TH ORL → ORL May 18, 12:45 UTCMay 18, 13:30 UTC45m
2026-05-17 N174TH ORL → ORL May 17, 12:15 UTCMay 17, 13:01 UTC45m
2026-05-16 N174TH ORL → ORL May 16, 18:20 UTCMay 16, 19:35 UTC1h 15m
2026-05-16 N174TH ORL → ORL May 16, 16:35 UTCMay 16, 17:35 UTC1h 0m
2026-05-15 N174TH ORL → ORL May 15, 12:50 UTCMay 15, 13:20 UTC30m
2026-05-14 N174TH ORL → ORL May 14, 20:30 UTCMay 14, 21:55 UTC1h 25m
2026-05-11 N174TH ORL → ORL May 11, 14:30 UTCMay 11, 15:35 UTC1h 5m
2026-05-10 N174TH ORL → ORL May 10, 14:30 UTCMay 10, 15:45 UTC1h 15m
2026-05-09 N174TH ORL → ORL May 9, 16:20 UTCMay 9, 17:10 UTC50m
2026-05-09 N174TH ORL → ORL May 9, 14:25 UTCMay 9, 15:20 UTC55m
2026-05-09 N174TH ORL → ORL May 9, 02:25 UTCMay 9, 02:35 UTC10m
2026-05-08 N174TH ORL → ORL May 8, 20:40 UTCMay 8, 21:35 UTC55m
2026-05-08 N174TH ORL → ORL May 8, 18:50 UTCMay 8, 20:05 UTC1h 15m
2026-05-08 N174TH ORL → ORL May 8, 11:25 UTCMay 8, 11:30 UTC5m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N174TH page for operator, model, and routing details .

Mode-S A129BA frequently asked

What is Mode-S code A129BA?
A129BA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N174TH.
Where is Mode-S A129BA registered?
Mode-S code A129BA is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A129BA broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A129BA, octal 50224672, decimal 10,561,978.
What flights does A129BA operate?
Mode-S A129BA has broadcast 1 distinct callsign, including N174TH.