Apparatus

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sensors Mode-S transponder

A2759B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N258EA · operated by MESA PILOT DEVELOPMENT LLC

Hex
A2759B
Octal
50472633
Decimal
10,646,939
Country
US
Tail
N258EA
No current signal · last broadcast 13h ago
Flights observed
195
Distinct callsigns
1
Country
US
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S A2759B.

Country allocation

The ICAO 24-bit address A2759B 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
N258EA - 195 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 N258EA - Jul 18, 14:10 UTCJul 18, 15:55 UTC1h 45m
2026-07-18 N258EA - Jul 18, 10:55 UTCJul 18, 12:25 UTC1h 30m
2026-07-11 N258EA - Jul 11, 10:55 UTCJul 11, 13:30 UTC2h 35m
2026-07-10 N258EA - Jul 10, 16:05 UTCJul 10, 18:30 UTC2h 25m
2026-07-10 N258EA - Jul 10, 13:25 UTCJul 10, 14:45 UTC1h 20m
2026-07-02 N258EA - Jul 2, 15:50 UTCJul 2, 17:05 UTC1h 15m
2026-07-02 N258EA - Jul 2, 14:05 UTCJul 2, 15:15 UTC1h 10m
2026-07-02 N258EA - Jul 2, 10:50 UTCJul 2, 13:40 UTC2h 50m
2026-07-01 N258EA - Jul 1, 08:35 UTCJul 1, 10:35 UTC2h 0m
2026-07-01 N258EA - Jul 1, 05:30 UTCJul 1, 08:10 UTC2h 40m
2026-07-01 N258EA - Jul 1, 02:15 UTCJul 1, 05:00 UTC2h 45m
2026-06-30 N258EA - Jun 30, 23:05 UTCJul 1, 01:55 UTC2h 50m
2026-06-26 N258EA - Jun 26, 10:50 UTCJun 26, 13:55 UTC3h 5m
2026-06-26 N258EA - Jun 26, 04:14 UTCJun 26, 07:20 UTC3h 5m
2026-06-26 N258EA - Jun 26, 00:55 UTCJun 26, 03:50 UTC2h 55m
2026-06-25 N258EA - Jun 25, 17:39 UTCJun 25, 20:25 UTC2h 45m
2026-06-25 N258EA - Jun 25, 08:24 UTCJun 25, 10:45 UTC2h 20m
2026-06-25 N258EA - Jun 25, 05:05 UTCJun 25, 07:59 UTC2h 55m
2026-06-25 N258EA - Jun 25, 01:40 UTCJun 25, 04:35 UTC2h 55m
2026-06-24 N258EA - Jun 24, 14:04 UTCJun 24, 15:35 UTC1h 30m
2026-06-24 N258EA - Jun 24, 05:20 UTCJun 24, 07:44 UTC2h 25m
2026-06-24 N258EA - Jun 24, 02:05 UTCJun 24, 04:55 UTC2h 50m
2026-06-23 N258EA - Jun 23, 22:55 UTCJun 24, 01:44 UTC2h 50m
2026-06-23 N258EA - Jun 23, 20:40 UTCJun 23, 22:40 UTC2h 0m
2026-06-23 N258EA - Jun 23, 17:44 UTCJun 23, 20:34 UTC2h 50m
2026-06-23 N258EA - Jun 23, 14:35 UTCJun 23, 17:15 UTC2h 40m
2026-06-23 N258EA - Jun 23, 10:44 UTCJun 23, 13:55 UTC3h 10m
2026-06-22 N258EA - Jun 22, 20:24 UTCJun 22, 22:40 UTC2h 15m
2026-06-22 N258EA - Jun 22, 17:34 UTCJun 22, 20:04 UTC2h 30m
2026-06-22 N258EA - Jun 22, 14:24 UTCJun 22, 17:04 UTC2h 40m
2026-06-22 N258EA - Jun 22, 10:44 UTCJun 22, 13:54 UTC3h 10m
2026-06-21 N258EA - Jun 21, 20:14 UTCJun 21, 22:34 UTC2h 20m
2026-06-21 N258EA - Jun 21, 17:29 UTCJun 21, 19:50 UTC2h 20m
2026-06-21 N258EA - Jun 21, 14:10 UTCJun 21, 16:59 UTC2h 50m
2026-06-21 N258EA - Jun 21, 10:49 UTCJun 21, 13:44 UTC2h 55m
2026-06-20 N258EA - Jun 20, 20:20 UTCJun 20, 20:45 UTC25m
2026-06-20 N258EA - Jun 20, 17:29 UTCJun 20, 19:55 UTC2h 25m
2026-06-20 N258EA - Jun 20, 08:14 UTCJun 20, 10:44 UTC2h 30m
2026-06-20 N258EA - Jun 20, 04:59 UTCJun 20, 08:05 UTC3h 5m
2026-06-20 N258EA - Jun 20, 01:44 UTCJun 20, 04:44 UTC3h 0m
2026-06-19 N258EA - Jun 19, 22:39 UTCJun 20, 01:29 UTC2h 50m
2026-06-19 N258EA - Jun 19, 08:09 UTCJun 19, 10:44 UTC2h 35m
2026-06-19 N258EA - Jun 19, 05:00 UTCJun 19, 07:54 UTC2h 55m
2026-06-19 N258EA - Jun 19, 01:59 UTCJun 19, 04:50 UTC2h 50m
2026-06-18 N258EA - Jun 18, 22:50 UTCJun 19, 01:34 UTC2h 44m
2026-06-18 N258EA - Jun 18, 07:35 UTCJun 18, 10:35 UTC3h 0m
2026-06-18 N258EA - Jun 18, 04:15 UTCJun 18, 07:15 UTC3h 0m
2026-06-11 N258EA - Jun 11, 20:20 UTCJun 11, 22:30 UTC2h 10m
2026-06-11 N258EA - Jun 11, 17:15 UTCJun 11, 19:55 UTC2h 40m
2026-06-11 N258EA - Jun 11, 14:20 UTCJun 11, 17:00 UTC2h 40m

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 N258EA page for operator, model, and routing details .

Mode-S A2759B frequently asked

What is Mode-S code A2759B?
A2759B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N258EA.
Where is Mode-S A2759B registered?
Mode-S code A2759B 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 A2759B broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2759B, octal 50472633, decimal 10,646,939.
What flights does A2759B operate?
Mode-S A2759B has broadcast 1 distinct callsign, including N258EA.