Apparatus

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sensors Mode-S transponder

A2D25E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N281GX · operated by UMB BANK NA TRUSTEE

Hex
A2D25E
Octal
50551136
Decimal
10,670,686
Country
US
Tail
N281GX
Type
A320
No current signal · last broadcast 1h ago
Flights observed
100
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A2D25E.

Country allocation

The ICAO 24-bit address A2D25E 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 20 distinct

Callsign Airline Flights Last seen
GXA6162 - 9 2026-06-27
GXA6161 - 8 2026-06-27
GXA6163 - 6 2026-06-28
GXA6151 - 3 2026-07-14
GXA6306 - 2 2026-06-17
GXA6182 - 2 2026-06-29
GXA6181 - 2 2026-06-29
GXA6143 - 2 2026-07-10
GXA6141 Grixona 2 2026-06-23
GXA614 Grixona 2 2026-04-27
GXA6108 Grixona 2 2026-07-11
GXA603 Grixona 2 2026-06-30
GXA201 Grixona 2 2026-04-19
GXA1661 Grixona 2 2026-04-26
GXA156 - 2 2026-06-28
GXA126 - 2 2026-07-03
GXA108 - 2 2026-07-12
GXA102 - 2 2026-07-09
GXA101 - 2 2026-07-09
GXA901 Grixona 1 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 GXA6151 - Jul 14, 08:05 UTCJul 14, 09:20 UTC1h 15m
2026-07-13 GXA6152 - Jul 13, 17:40 UTCJul 13, 23:00 UTC5h 20m
2026-07-13 GXA6151 - Jul 13, 14:40 UTCJul 13, 15:55 UTC1h 15m
2026-07-12 GXA109 - Jul 12, 23:55 UTCJul 13, 01:01 UTC1h 5m
2026-07-12 GXA628 BOS → DAL Jul 12, 19:20 UTCJul 12, 22:45 UTC3h 25m
2026-07-12 GXA108 - Jul 12, 00:50 UTCJul 12, 04:35 UTC3h 45m
2026-07-11 GXA6108 AEX → MGA Jul 11, 15:05 UTCJul 11, 21:50 UTC6h 45m
2026-07-11 GXA6151 - Jul 11, 11:50 UTCJul 11, 12:50 UTC1h 0m
2026-07-10 GXA6143 - Jul 10, 12:25 UTCJul 10, 23:05 UTC10h 40m
2026-07-09 GXA102 - Jul 9, 21:20 UTCJul 9, 22:45 UTC1h 25m
2026-07-09 GXA601 TPA → FYV Jul 9, 17:45 UTCJul 9, 19:40 UTC1h 55m
2026-07-09 GXA101 - Jul 9, 14:10 UTCJul 9, 14:40 UTC30m
2026-07-09 GXA637 - Jul 9, 06:35 UTCJul 9, 09:15 UTC2h 40m
2026-07-09 GXA636 - Jul 9, 01:40 UTCJul 9, 05:00 UTC3h 20m
2026-07-05 GXA635 - Jul 5, 22:30 UTCJul 6, 02:00 UTC3h 30m
2026-07-05 GXA130 - Jul 5, 06:20 UTCJul 5, 09:10 UTC2h 50m
2026-07-05 GXA677 - Jul 5, 03:55 UTCJul 5, 05:10 UTC1h 15m
2026-07-03 GXA606 - Jul 3, 14:55 UTCJul 3, 15:55 UTC1h 0m
2026-07-03 GXA126 - Jul 3, 09:05 UTCJul 3, 12:05 UTC3h 0m
2026-07-01 GXA6206 - Jul 1, 15:15 UTCJul 1, 17:30 UTC2h 15m
2026-07-01 GXA148 - Jul 1, 03:15 UTCJul 1, 04:20 UTC1h 5m
2026-06-30 GXA603 MKE → BZN Jun 30, 21:25 UTCJul 1, 01:30 UTC4h 5m
2026-06-30 GXA126 ORD → MIA Jun 30, 15:25 UTCJun 30, 16:40 UTC1h 15m
2026-06-29 GXA6182 - Jun 29, 16:10 UTCJun 29, 22:00 UTC5h 50m
2026-06-29 GXA6181 - Jun 29, 13:39 UTCJun 29, 14:34 UTC55m
2026-06-28 GXA102 MIA → BDL Jun 28, 19:49 UTCJun 28, 22:39 UTC2h 50m
2026-06-28 GXA602 BDL → BZN Jun 28, 16:45 UTCJun 28, 18:40 UTC1h 55m
2026-06-28 GXA156 - Jun 28, 13:00 UTCJun 28, 14:34 UTC1h 35m
2026-06-28 GXA6163 - Jun 28, 01:04 UTCJun 28, 02:39 UTC1h 35m
2026-06-27 GXA6162 - Jun 27, 19:59 UTCJun 27, 23:34 UTC3h 35m
2026-06-27 GXA6161 - Jun 27, 16:14 UTCJun 27, 18:20 UTC2h 5m
2026-06-27 GXA105 AEX → HRL Jun 27, 13:04 UTCJun 27, 14:00 UTC55m
2026-06-27 GXA104 AUA → MIA Jun 27, 00:55 UTCJun 27, 10:50 UTC9h 55m
2026-06-26 GXA633 - Jun 26, 14:19 UTCJun 26, 16:20 UTC2h 0m
2026-06-26 GXA101 - Jun 26, 08:00 UTCJun 26, 11:45 UTC3h 45m
2026-06-24 GXA603 MKE → BZN Jun 24, 21:34 UTCJun 25, 05:15 UTC7h 40m
2026-06-24 GXA108 - Jun 24, 01:34 UTCJun 24, 03:35 UTC2h 0m
2026-06-23 GXA6142 - Jun 23, 20:40 UTCJun 23, 21:39 UTC1h 0m
2026-06-23 GXA6141 HRL → GYY Jun 23, 14:29 UTCJun 23, 16:24 UTC1h 55m
2026-06-23 GXA6144 - Jun 23, 00:39 UTCJun 23, 01:35 UTC55m
2026-06-22 GXA6169 SAL → HRL Jun 22, 20:24 UTCJun 22, 22:30 UTC2h 5m
2026-06-22 GXA6168 ELP → SAL Jun 22, 15:59 UTCJun 22, 19:14 UTC3h 15m
2026-06-22 GXA6141 HRL → GYY Jun 22, 12:15 UTCJun 22, 13:44 UTC1h 30m
2026-06-21 GXA6163 - Jun 21, 16:10 UTCJun 21, 18:14 UTC2h 5m
2026-06-21 GXA6162 SAN → TAP Jun 21, 14:50 UTCJun 21, 14:59 UTC10m
2026-06-21 GXA6162 SAN → TAP Jun 21, 11:44 UTCJun 21, 14:10 UTC2h 25m
2026-06-21 GXA6161 - Jun 21, 08:54 UTCJun 21, 10:19 UTC1h 25m
2026-06-18 GXA6162 SAN → TAP Jun 18, 16:35 UTCJun 18, 22:35 UTC6h 0m
2026-06-18 GXA6161 HRL → TTN Jun 18, 13:15 UTCJun 18, 14:50 UTC1h 35m
2026-06-17 GXA6163 JAX → IAH Jun 17, 23:45 UTCJun 18, 01:10 UTC1h 25m

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 N281GX page for operator, model, and routing details .

Mode-S A2D25E frequently asked

What is Mode-S code A2D25E?
A2D25E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N281GX.
Where is Mode-S A2D25E registered?
Mode-S code A2D25E 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 A2D25E broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2D25E, octal 50551136, decimal 10,670,686.
What flights does A2D25E operate?
Mode-S A2D25E has broadcast 20 distinct callsigns, including GXA6162, GXA6161, GXA6163, GXA6151, GXA6306.