Apparatus

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sensors Mode-S transponder

A28AA4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N263FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A28AA4
Octal
50505244
Decimal
10,652,324
Country
US
Tail
N263FE
Type
B763
Broadcasting now · callsign FDX1238 · 34,025 ft
Flights observed
221
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 13:00 UTC

Current position

A28AA4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A28AA4 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
FDX1874 - 8 2026-07-01
FDX1537 FedEx Express 5 2026-07-24
FDX1876 - 4 2026-07-14
FDX1290 - 4 2026-07-02
FDX1265 FedEx Express 4 2026-07-25
FDX851 FedEx Express 3 2026-06-21
FDX57 - 3 2026-06-26
FDX1837 - 3 2026-07-14
FDX1806 - 3 2026-07-01
FDX1750 FedEx Express 3 2026-06-03
FDX1609 - 3 2026-07-03
FDX1446 FedEx Express 3 2026-06-12
FDX1439 - 3 2026-06-20
FDX1425 - 3 2026-07-09
FDX1415 FedEx Express 3 2026-07-23
FDX1401 - 3 2026-07-02
FDX1378 - 3 2026-07-10
FDX1299 FedEx Express 3 2026-05-16
FDX830 FedEx Express 2 2026-04-21
FDX794 - 2 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1440 MEM → LAS Jul 25, 09:40 UTCJul 25, 12:25 UTC2h 45m
2026-07-25 FDX1440 MEM → LAS Jul 25, 09:36 UTCJul 25, 12:19 UTC2h 43m
2026-07-25 FDX1265 HRL → MEM Jul 25, 03:35 UTCJul 25, 05:00 UTC1h 25m
2026-07-25 FDX1265 HRL → MEM Jul 25, 01:55 UTCJul 25, 02:30 UTC35m
2026-07-24 FDX1537 MEM → HRL Jul 24, 09:15 UTCJul 24, 10:40 UTC1h 25m
2026-07-24 FDX1537 MEM → HRL Jul 24, 09:10 UTCJul 24, 10:44 UTC1h 34m
2026-07-24 FDX1216 PDX → MEM Jul 24, 01:45 UTCJul 24, 05:20 UTC3h 35m
2026-07-23 FDX1415 MEM → PDX Jul 23, 08:10 UTCJul 23, 11:55 UTC3h 45m
2026-07-23 FDX1265 HRL → MEM Jul 23, 01:45 UTCJul 23, 03:20 UTC1h 35m
2026-07-22 FDX1537 - Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-22 FDX1537 MEM → HRL Jul 22, 10:30 UTCJul 22, 12:04 UTC1h 34m
2026-07-22 FDX1292 JFK → MEM Jul 22, 02:55 UTCJul 22, 05:20 UTC2h 25m
2026-07-21 FDX1483 - Jul 21, 08:45 UTCJul 21, 10:40 UTC1h 55m
2026-07-21 FDX1292 JFK → MEM Jul 21, 03:25 UTCJul 21, 05:45 UTC2h 20m
2026-07-19 FDX558 MEM → JFK Jul 19, 20:05 UTCJul 19, 22:20 UTC2h 15m
2026-07-19 FDX653 DTW → MEM Jul 19, 13:40 UTCJul 19, 15:05 UTC1h 25m
2026-07-19 FDX653 DTW → MEM Jul 19, 11:30 UTCJul 19, 12:55 UTC1h 25m
2026-07-17 FDX1418 - Jul 17, 08:45 UTCJul 17, 10:05 UTC1h 20m
2026-07-17 FDX1418 MEM → DTW Jul 17, 08:39 UTCJul 17, 10:00 UTC1h 21m
2026-07-17 FDX131 - Jul 17, 01:55 UTCJul 17, 04:20 UTC2h 25m
2026-07-16 FDX130 - Jul 16, 09:10 UTCJul 16, 11:20 UTC2h 10m
2026-07-16 FDX1247 - Jul 16, 04:10 UTCJul 16, 05:20 UTC1h 10m
2026-07-15 FDX1447 - Jul 15, 08:00 UTCJul 15, 09:10 UTC1h 10m
2026-07-15 FDX1224 - Jul 15, 01:45 UTCJul 15, 03:20 UTC1h 35m
2026-07-14 FDX794 - Jul 14, 21:00 UTCJul 14, 22:35 UTC1h 35m
2026-07-14 FDX456 - Jul 14, 13:15 UTCJul 14, 16:35 UTC3h 20m
2026-07-14 FDX1876 OAK → LAX Jul 14, 09:01 UTCJul 14, 09:54 UTC53m
2026-07-14 FDX1876 - Jul 14, 09:05 UTCJul 14, 09:55 UTC50m
2026-07-14 FDX1837 - Jul 14, 05:00 UTCJul 14, 06:25 UTC1h 25m
2026-07-11 FDX1403 - Jul 11, 09:55 UTCJul 11, 12:30 UTC2h 35m
2026-07-11 FDX2200 - Jul 11, 05:15 UTCJul 11, 07:00 UTC1h 45m
2026-07-11 FDX2200 FLL → MEM Jul 11, 05:14 UTCJul 11, 07:01 UTC1h 47m
2026-07-10 FDX1444 - Jul 10, 08:10 UTCJul 10, 09:55 UTC1h 45m
2026-07-10 FDX1444 MEM → FLL Jul 10, 08:08 UTCJul 10, 09:55 UTC1h 47m
2026-07-10 FDX1378 - Jul 10, 02:00 UTCJul 10, 03:05 UTC1h 5m
2026-07-09 FDX1425 - Jul 9, 10:45 UTCJul 9, 11:30 UTC45m
2026-07-09 FDX1425 - Jul 9, 08:10 UTCJul 9, 09:10 UTC1h 0m
2026-07-09 FDX1249 - Jul 9, 01:55 UTCJul 9, 03:30 UTC1h 35m
2026-07-08 FDX1449 - Jul 8, 09:05 UTCJul 8, 10:25 UTC1h 20m
2026-07-08 FDX1449 MEM → RDU Jul 8, 09:00 UTCJul 8, 10:23 UTC1h 23m
2026-07-08 FDX1265 - Jul 8, 01:45 UTCJul 8, 03:20 UTC1h 35m
2026-07-07 FDX1537 - Jul 7, 10:10 UTCJul 7, 11:45 UTC1h 35m
2026-07-07 FDX2204 - Jul 7, 05:30 UTCJul 7, 07:05 UTC1h 35m
2026-07-05 FDX787 - Jul 5, 20:50 UTCJul 5, 22:25 UTC1h 35m
2026-07-04 FDX1204 - Jul 4, 03:15 UTCJul 4, 04:35 UTC1h 20m
2026-07-04 FDX1204 PIT → MEM Jul 4, 03:10 UTCJul 4, 04:35 UTC1h 25m
2026-07-03 FDX1722 IND → PIT Jul 3, 08:37 UTCJul 3, 09:24 UTC47m
2026-07-03 FDX1722 - Jul 3, 08:40 UTCJul 3, 09:25 UTC45m
2026-07-03 FDX1609 - Jul 3, 03:30 UTCJul 3, 05:10 UTC1h 40m
2026-07-03 FDX1609 DFW → IND Jul 3, 03:29 UTCJul 3, 05:06 UTC1h 37m

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 N263FE page for operator, model, and routing details .

Mode-S A28AA4 frequently asked

What is Mode-S code A28AA4?
A28AA4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N263FE.
Where is Mode-S A28AA4 registered?
Mode-S code A28AA4 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 A28AA4 broadcasting right now?
Yes. Mode-S A28AA4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A28AA4, octal 50505244, decimal 10,652,324.
What flights does A28AA4 operate?
Mode-S A28AA4 has broadcast 20 distinct callsigns, including FDX1874, FDX1537, FDX1876, FDX1290, FDX1265.