Apparatus

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sensors Mode-S transponder

A2D234

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N281FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A2D234
Octal
50551064
Decimal
10,670,644
Country
US
Tail
N281FE
Type
B763
No current signal · last broadcast 22h ago
Flights observed
93
Distinct callsigns
20
Country
US
Last broadcast
22h ago

Last known position

Most recent position reported by Mode-S A2D234.

Country allocation

The ICAO 24-bit address A2D234 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
FDX853 FedEx Express 3 2026-05-07
FDX979 FedEx Express 2 2026-04-30
FDX910 FedEx Express 2 2026-04-23
FDX764 FedEx Express 2 2026-05-20
FDX63 FedEx Express 2 2026-05-11
FDX452 FedEx Express 2 2026-06-10
FDX398 FedEx Express 2 2026-05-21
FDX257 FedEx Express 2 2026-06-10
FDX252 FedEx Express 2 2026-05-13
FDX1874 FedEx Express 2 2026-05-01
FDX1801 FedEx Express 2 2026-05-08
FDX1742 FedEx Express 2 2026-06-10
FDX1463 FedEx Express 2 2026-05-29
FDX1426 FedEx Express 2 2026-06-12
FDX1414 FedEx Express 2 2026-06-11
FDX1411 FedEx Express 2 2026-06-02
FDX1344 FedEx Express 2 2026-06-12
FDX1221 FedEx Express 2 2026-06-02
FDX1121 FedEx Express 2 2026-05-19
FDX9131 FedEx Express 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 FDX1426 MEM → JAX Jun 12, 10:10 UTCJun 12, 10:30 UTC20m
2026-06-12 FDX1426 MEM → JAX Jun 12, 08:00 UTCJun 12, 09:15 UTC1h 15m
2026-06-12 FDX1344 TUS → MEM Jun 12, 01:55 UTCJun 12, 04:25 UTC2h 30m
2026-06-11 FDX1414 MEM → TUS Jun 11, 10:10 UTCJun 11, 12:50 UTC2h 40m
2026-06-11 FDX58 BQN → MEM Jun 11, 03:10 UTCJun 11, 05:30 UTC2h 20m
2026-06-10 FDX257 MEM → BQN Jun 10, 20:00 UTCJun 10, 21:50 UTC1h 50m
2026-06-10 FDX257 MEM → BQN Jun 10, 19:54 UTCJun 10, 23:24 UTC3h 30m
2026-06-10 FDX452 LAX → MEM Jun 10, 13:20 UTCJun 10, 16:25 UTC3h 5m
2026-06-10 FDX1742 IND → LAX Jun 10, 07:05 UTCJun 10, 10:55 UTC3h 50m
2026-06-10 FDX1601 DFW → IND Jun 10, 02:45 UTCJun 10, 04:25 UTC1h 40m
2026-06-09 FDX1735 IND → DFW Jun 9, 07:35 UTCJun 9, 09:10 UTC1h 35m
2026-06-06 FDX3646 ONT → IND Jun 6, 13:39 UTCJun 6, 17:10 UTC3h 30m
2026-06-06 FDX1438 MEM → ONT Jun 6, 08:45 UTCJun 6, 12:00 UTC3h 15m
2026-06-05 FDX1292 JFK → MEM Jun 5, 02:55 UTCJun 5, 04:55 UTC2h 0m
2026-06-04 FDX1483 MEM → JFK Jun 4, 08:25 UTCJun 4, 10:35 UTC2h 10m
2026-06-03 FDX1378 BUF → MEM Jun 3, 03:05 UTCJun 3, 04:10 UTC1h 5m
2026-06-02 FDX1411 MEM → IAH Jun 2, 12:40 UTCJun 2, 13:25 UTC45m
2026-06-02 FDX1411 MEM → IAH Jun 2, 09:55 UTCJun 2, 11:15 UTC1h 20m
2026-06-02 FDX1221 ATL → MEM Jun 2, 02:15 UTCJun 2, 03:06 UTC51m
2026-06-02 FDX1221 ATL → MEM Jun 2, 02:15 UTCJun 2, 03:00 UTC45m
2026-05-29 FDX1463 MEM → ATL May 29, 08:45 UTCMay 29, 09:35 UTC50m
2026-05-29 FDX1463 MEM → ATL May 29, 08:39 UTCMay 29, 09:31 UTC52m
2026-05-29 FDX1361 SDF → MEM May 29, 03:35 UTCMay 29, 04:30 UTC55m
2026-05-28 FDX1467 MEM → SDF May 28, 09:35 UTCMay 28, 10:25 UTC50m
2026-05-28 FDX1253 ABE → MEM May 28, 01:55 UTCMay 28, 04:00 UTC2h 5m
2026-05-27 FDX1497 MEM → ABE May 27, 08:50 UTCMay 27, 10:30 UTC1h 40m
2026-05-27 FDX1210 TPA → MEM May 27, 02:19 UTCMay 27, 03:50 UTC1h 30m
2026-05-22 FDX1410 MEM → TPA May 22, 08:35 UTCMay 22, 10:00 UTC1h 25m
2026-05-22 FDX1200 FLL → MEM May 22, 02:50 UTCMay 22, 04:35 UTC1h 45m
2026-05-21 FDX398 MEM → ORD May 21, 21:55 UTCMay 21, 23:45 UTC1h 50m
2026-05-21 FDX398 MEM → ORD May 21, 21:54 UTCMay 21, 23:45 UTC1h 51m
2026-05-21 FDX447 PHL → MEM May 21, 16:55 UTCMay 21, 19:10 UTC2h 15m
2026-05-21 FDX1704 IND → PHL May 21, 08:40 UTCMay 21, 09:50 UTC1h 10m
2026-05-21 FDX1612 JFK → IND May 21, 04:00 UTCMay 21, 05:40 UTC1h 40m
2026-05-20 FDX764 MEM → JFK May 20, 20:50 UTCMay 21, 00:30 UTC3h 40m
2026-05-20 FDX764 MEM → JFK May 20, 20:47 UTCMay 21, 00:30 UTC3h 43m
2026-05-20 FDX452 LAX → MEM May 20, 13:10 UTCMay 20, 16:15 UTC3h 5m
2026-05-20 FDX1742 IND → LAX May 20, 07:15 UTCMay 20, 11:20 UTC4h 5m
2026-05-20 FDX1602 ATL → IND May 20, 03:55 UTCMay 20, 04:30 UTC35m
2026-05-19 FDX1157 AFW → ORD May 19, 07:40 UTCMay 19, 09:25 UTC1h 45m
2026-05-19 FDX1121 LRD → SAT May 19, 03:45 UTCMay 19, 04:30 UTC45m
2026-05-19 FDX1121 LRD → SAT May 19, 03:43 UTCMay 19, 04:27 UTC44m
2026-05-17 FDX379 MEM → SAT May 17, 22:15 UTCMay 17, 23:55 UTC1h 40m
2026-05-17 FDX5986 ANC → MEM May 17, 02:35 UTCMay 17, 08:40 UTC6h 5m
2026-05-16 FDX169 ANC → NRT May 16, 09:56 UTCMay 16, 14:25 UTC4h 30m
2026-05-16 FDX1838 SEA → OAK May 16, 03:50 UTCMay 16, 05:25 UTC1h 35m
2026-05-15 FDX1717 IND → SEA May 15, 08:15 UTCMay 15, 12:35 UTC4h 20m
2026-05-15 FDX1627 ORD → IND May 15, 04:15 UTCMay 15, 04:50 UTC35m
2026-05-14 FDX1706 IND → ORD May 14, 08:50 UTCMay 14, 09:30 UTC40m
2026-05-14 FDX1678 PHX → IND May 14, 02:45 UTCMay 14, 05:35 UTC2h 50m

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 N281FE page for operator, model, and routing details .

Mode-S A2D234 frequently asked

What is Mode-S code A2D234?
A2D234 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N281FE.
Where is Mode-S A2D234 registered?
Mode-S code A2D234 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 A2D234 broadcasting right now?
No active broadcast right now. Last signal was 22h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A2D234, octal 50551064, decimal 10,670,644.
What flights does A2D234 operate?
Mode-S A2D234 has broadcast 20 distinct callsigns, including FDX853, FDX979, FDX910, FDX764, FDX63.