Apparatus

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sensors Mode-S transponder

A5A2BA

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N462TH · DIAMOND DA-40 Club Star · operated by INDIANA STATE UNIVERSITY

Hex
A5A2BA
Octal
51321272
Decimal
10,855,098
Country
US
Tail
N462TH
Type
DA40
No current signal · last broadcast 1d ago
Flights observed
165
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S A5A2BA.

Country allocation

The ICAO 24-bit address A5A2BA 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
ISU42 - 165 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 ISU42 - Jul 16, 17:25 UTCJul 16, 17:45 UTC20m
2026-07-16 ISU42 - Jul 16, 15:05 UTCJul 16, 16:19 UTC1h 15m
2026-07-16 ISU42 - Jul 16, 11:45 UTCJul 16, 12:40 UTC55m
2026-07-15 ISU42 HUF → HUF Jul 15, 23:15 UTCJul 16, 00:45 UTC1h 30m
2026-07-15 ISU42 - Jul 15, 21:25 UTCJul 15, 21:35 UTC10m
2026-07-15 ISU42 - Jul 15, 19:45 UTCJul 15, 20:05 UTC20m
2026-07-15 ISU42 - Jul 15, 19:00 UTCJul 15, 19:10 UTC10m
2026-07-15 ISU42 - Jul 15, 15:40 UTCJul 15, 16:15 UTC35m
2026-07-15 ISU42 - Jul 15, 13:40 UTCJul 15, 14:30 UTC50m
2026-07-14 ISU42 - Jul 14, 22:05 UTCJul 14, 22:25 UTC20m
2026-07-14 ISU42 - Jul 14, 21:10 UTCJul 14, 21:25 UTC15m
2026-07-14 ISU42 - Jul 14, 13:25 UTCJul 14, 14:40 UTC1h 15m
2026-07-14 ISU42 - Jul 14, 01:20 UTCJul 14, 02:20 UTC1h 0m
2026-07-13 ISU42 - Jul 13, 22:00 UTCJul 13, 22:25 UTC25m
2026-07-13 ISU42 - Jul 13, 19:15 UTCJul 13, 20:15 UTC1h 0m
2026-07-13 ISU42 - Jul 13, 17:00 UTCJul 13, 18:15 UTC1h 15m
2026-07-13 ISU42 - Jul 13, 15:30 UTCJul 13, 16:15 UTC45m
2026-07-13 ISU42 HUF → HUF Jul 13, 12:55 UTCJul 13, 14:10 UTC1h 15m
2026-07-12 ISU42 - Jul 12, 16:55 UTCJul 12, 17:35 UTC40m
2026-07-12 ISU42 - Jul 12, 13:35 UTCJul 12, 15:55 UTC2h 20m
2026-07-10 ISU42 - Jul 10, 19:00 UTCJul 10, 19:40 UTC40m
2026-07-10 ISU42 - Jul 10, 16:45 UTCJul 10, 17:40 UTC55m
2026-07-10 ISU42 - Jul 10, 15:15 UTCJul 10, 16:00 UTC45m
2026-07-08 ISU42 HUF → HUF Jul 8, 22:55 UTCJul 8, 23:45 UTC50m
2026-07-08 ISU42 - Jul 8, 21:05 UTCJul 8, 22:00 UTC55m
2026-07-08 ISU42 - Jul 8, 16:30 UTCJul 8, 17:10 UTC40m
2026-07-08 ISU42 - Jul 8, 14:20 UTCJul 8, 15:35 UTC1h 15m
2026-07-08 ISU42 - Jul 8, 02:45 UTCJul 8, 03:10 UTC25m
2026-07-07 ISU42 - Jul 7, 23:50 UTCJul 8, 00:55 UTC1h 5m
2026-07-07 ISU42 HUF → HUF Jul 7, 20:40 UTCJul 7, 21:00 UTC20m
2026-07-02 ISU42 - Jul 2, 13:30 UTCJul 2, 14:20 UTC50m
2026-07-02 ISU42 - Jul 2, 01:15 UTCJul 2, 02:15 UTC1h 0m
2026-07-01 ISU42 - Jul 1, 13:05 UTCJul 1, 13:40 UTC35m
2026-07-01 ISU42 - Jul 1, 01:50 UTCJul 1, 03:00 UTC1h 10m
2026-06-30 ISU42 - Jun 30, 15:30 UTCJun 30, 16:10 UTC40m
2026-06-30 ISU42 - Jun 30, 12:30 UTCJun 30, 13:10 UTC40m
2026-06-29 ISU42 - Jun 29, 17:10 UTCJun 29, 17:30 UTC20m
2026-06-29 ISU42 - Jun 29, 15:09 UTCJun 29, 15:24 UTC15m
2026-06-29 ISU42 - Jun 29, 11:29 UTCJun 29, 12:45 UTC1h 15m
2026-06-28 ISU42 - Jun 28, 18:00 UTCJun 28, 18:55 UTC55m
2026-06-25 ISU42 HUF → HUF Jun 25, 19:29 UTCJun 25, 20:09 UTC40m
2026-06-25 ISU42 - Jun 25, 13:55 UTCJun 25, 14:29 UTC35m
2026-06-25 ISU42 - Jun 25, 12:10 UTCJun 25, 12:50 UTC40m
2026-06-24 ISU42 - Jun 24, 19:55 UTCJun 24, 21:00 UTC1h 5m
2026-06-24 ISU42 VPZ → VPZ Jun 24, 17:55 UTCJun 24, 19:00 UTC1h 5m
2026-06-24 ISU42 VPZ → VPZ Jun 24, 14:09 UTCJun 24, 15:35 UTC1h 25m
2026-06-24 ISU42 - Jun 24, 10:55 UTCJun 24, 11:50 UTC55m
2026-06-23 ISU42 - Jun 23, 22:15 UTCJun 23, 23:00 UTC45m
2026-06-23 ISU42 - Jun 23, 17:20 UTCJun 23, 18:29 UTC1h 10m
2026-06-23 ISU42 - Jun 23, 12:45 UTCJun 23, 13:05 UTC20m

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 N462TH page for operator, model, and routing details .

Mode-S A5A2BA frequently asked

What is Mode-S code A5A2BA?
A5A2BA is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N462TH.
Where is Mode-S A5A2BA registered?
Mode-S code A5A2BA 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 A5A2BA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5A2BA, octal 51321272, decimal 10,855,098.
What flights does A5A2BA operate?
Mode-S A5A2BA has broadcast 1 distinct callsign, including ISU42.