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sensors Mode-S transponder

A5898B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N456MT · AIRBUS HELICOPTERS EC-135/635 · operated by MED-TRANS CORP

Hex
A5898B
Octal
51304613
Decimal
10,848,651
Country
US
Tail
N456MT
Type
EC35
No current signal · last broadcast 4h ago
Flights observed
180
Distinct callsigns
1
Country
US
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S A5898B.

Country allocation

The ICAO 24-bit address A5898B 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
N456MT - 180 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 N456MT - Jul 14, 12:10 UTCJul 14, 13:55 UTC1h 45m
2026-07-13 N456MT - Jul 13, 20:30 UTCJul 13, 21:50 UTC1h 20m
2026-07-13 N456MT - Jul 13, 11:35 UTCJul 13, 12:50 UTC1h 15m
2026-07-11 N456MT - Jul 11, 16:40 UTCJul 11, 17:45 UTC1h 5m
2026-07-11 N456MT - Jul 11, 03:40 UTCJul 11, 03:50 UTC10m
2026-07-11 N456MT - Jul 11, 02:10 UTCJul 11, 03:01 UTC50m
2026-07-08 N456MT - Jul 8, 21:20 UTCJul 8, 22:55 UTC1h 35m
2026-07-08 N456MT - Jul 8, 17:40 UTCJul 8, 18:10 UTC30m
2026-07-08 N456MT - Jul 8, 16:40 UTCJul 8, 17:00 UTC20m
2026-07-08 N456MT - Jul 8, 15:45 UTCJul 8, 16:05 UTC20m
2026-07-08 N456MT MJX → MJX Jul 8, 11:25 UTCJul 8, 13:05 UTC1h 40m
2026-07-08 N456MT - Jul 8, 03:30 UTCJul 8, 03:50 UTC20m
2026-07-08 N456MT - Jul 8, 02:30 UTCJul 8, 02:40 UTC10m
2026-07-08 N456MT - Jul 8, 00:55 UTCJul 8, 01:20 UTC25m
2026-07-05 N456MT - Jul 5, 21:55 UTCJul 5, 22:55 UTC1h 0m
2026-07-04 N456MT - Jul 4, 23:20 UTCJul 4, 23:30 UTC10m
2026-07-04 N456MT - Jul 4, 04:25 UTCJul 4, 04:40 UTC15m
2026-07-04 N456MT - Jul 4, 03:00 UTCJul 4, 03:45 UTC45m
2026-07-01 N456MT - Jul 1, 19:40 UTCJul 1, 20:55 UTC1h 15m
2026-06-29 N456MT - Jun 29, 19:39 UTCJun 29, 20:49 UTC1h 10m
2026-06-29 N456MT - Jun 29, 03:05 UTCJun 29, 03:25 UTC20m
2026-06-29 N456MT - Jun 29, 02:05 UTCJun 29, 02:25 UTC20m
2026-06-29 N456MT - Jun 29, 00:39 UTCJun 29, 01:00 UTC20m
2026-06-28 N456MT - Jun 28, 18:29 UTCJun 28, 19:55 UTC1h 25m
2026-06-25 N456MT - Jun 25, 16:59 UTCJun 25, 17:30 UTC30m
2026-06-25 N456MT - Jun 25, 15:50 UTCJun 25, 15:59 UTC10m
2026-06-25 N456MT - Jun 25, 14:09 UTCJun 25, 14:34 UTC25m
2026-06-25 N456MT - Jun 25, 13:09 UTCJun 25, 13:20 UTC10m
2026-06-24 N456MT - Jun 24, 23:40 UTCJun 25, 00:14 UTC35m
2026-06-24 N456MT - Jun 24, 01:24 UTCJun 24, 02:00 UTC35m
2026-06-22 N456MT - Jun 22, 05:34 UTCJun 22, 05:49 UTC15m
2026-06-22 N456MT - Jun 22, 04:34 UTCJun 22, 04:49 UTC15m
2026-06-21 N456MT - Jun 21, 18:29 UTCJun 21, 19:55 UTC1h 25m
2026-06-20 N456MT - Jun 20, 01:39 UTCJun 20, 01:55 UTC15m
2026-06-20 N456MT - Jun 20, 00:34 UTCJun 20, 00:49 UTC15m
2026-06-19 N456MT - Jun 19, 18:54 UTCJun 19, 19:39 UTC45m
2026-06-19 N456MT - Jun 19, 17:55 UTCJun 19, 18:20 UTC25m
2026-06-19 N456MT - Jun 19, 16:14 UTCJun 19, 16:34 UTC20m
2026-06-18 N456MT - Jun 18, 16:55 UTCJun 18, 18:25 UTC1h 30m
2026-06-18 N456MT - Jun 18, 15:40 UTCJun 18, 15:55 UTC15m
2026-06-17 N456MT - Jun 17, 20:25 UTCJun 17, 21:20 UTC55m
2026-06-16 N456MT - Jun 16, 13:50 UTCJun 16, 14:05 UTC15m
2026-06-16 N456MT - Jun 16, 13:04 UTCJun 16, 13:15 UTC10m
2026-06-16 N456MT - Jun 16, 12:20 UTCJun 16, 12:30 UTC10m
2026-06-16 N456MT - Jun 16, 10:04 UTCJun 16, 10:20 UTC15m
2026-06-16 N456MT - Jun 16, 08:55 UTCJun 16, 09:15 UTC20m
2026-06-14 N456MT - Jun 14, 22:55 UTCJun 15, 00:10 UTC1h 14m
2026-06-14 N456MT - Jun 14, 00:05 UTCJun 14, 00:30 UTC25m
2026-06-13 N456MT - Jun 13, 22:50 UTCJun 13, 23:00 UTC10m
2026-06-13 N456MT - Jun 13, 21:05 UTCJun 13, 21:30 UTC25m

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 N456MT page for operator, model, and routing details .

Mode-S A5898B frequently asked

What is Mode-S code A5898B?
A5898B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N456MT.
Where is Mode-S A5898B registered?
Mode-S code A5898B 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 A5898B broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5898B, octal 51304613, decimal 10,848,651.
What flights does A5898B operate?
Mode-S A5898B has broadcast 1 distinct callsign, including N456MT.