Apparatus

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sensors Mode-S transponder

A0B20E

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N144FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A0B20E
Octal
50131016
Decimal
10,531,342
Country
US
Tail
N144FE
Type
B763
Broadcasting now · callsign FDX1208 · 39,000 ft
Flights observed
208
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 11:30 UTC

Current position

A0B20E is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A0B20E 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
FDX54 - 6 2026-07-10
FDX265 - 6 2026-07-16
FDX66 - 5 2026-07-17
FDX266 - 5 2026-07-16
FDX694 - 4 2026-07-14
FDX68 FedEx Express 4 2026-07-25
FDX67 FedEx Express 4 2026-07-24
FDX65 FedEx Express 4 2026-04-16
FDX53 FedEx Express 4 2026-05-22
FDX253 - 4 2026-07-09
FDX1421 FedEx Express 4 2026-07-23
FDX653 FedEx Express 3 2026-04-19
FDX1506 - 3 2026-06-24
FDX1447 - 3 2026-07-01
FDX1434 - 3 2026-07-14
FDX1221 FedEx Express 3 2026-07-24
FDX1207 - 3 2026-07-11
FDX1155 FedEx Express 3 2026-06-10
FDX82 - 2 2026-06-29
FDX57 FedEx Express 2 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1420 MEM → DEN Jul 25, 09:30 UTCJul 25, 11:25 UTC1h 55m
2026-07-25 FDX68 MTY → MEM Jul 25, 03:00 UTCJul 25, 04:50 UTC1h 50m
2026-07-24 FDX67 MEM → MTY Jul 24, 09:25 UTCJul 24, 11:10 UTC1h 45m
2026-07-24 FDX1221 ATL → MEM Jul 24, 02:05 UTCJul 24, 02:55 UTC50m
2026-07-23 FDX1421 MEM → ATL Jul 23, 08:00 UTCJul 23, 08:45 UTC45m
2026-07-23 FDX1421 MEM → ATL Jul 23, 07:54 UTCJul 23, 08:44 UTC50m
2026-07-23 FDX1221 ATL → MEM Jul 23, 02:05 UTCJul 23, 02:55 UTC50m
2026-07-23 FDX1221 ATL → MEM Jul 23, 02:04 UTCJul 23, 02:52 UTC48m
2026-07-22 FDX1358 MSP → MEM Jul 22, 02:45 UTCJul 22, 04:35 UTC1h 50m
2026-07-21 FDX798 MEM → MSP Jul 21, 21:20 UTCJul 21, 23:00 UTC1h 40m
2026-07-21 FDX434 - Jul 21, 12:25 UTCJul 21, 13:45 UTC1h 20m
2026-07-21 FDX434 SAT → MEM Jul 21, 12:21 UTCJul 21, 13:45 UTC1h 24m
2026-07-21 FDX1426 MEM → JAX Jul 21, 09:20 UTCJul 21, 09:40 UTC20m
2026-07-21 FDX1426 MEM → JAX Jul 21, 07:20 UTCJul 21, 08:30 UTC1h 10m
2026-07-21 FDX2307 - Jul 21, 03:00 UTCJul 21, 03:50 UTC50m
2026-07-17 FDX1574 - Jul 17, 08:04 UTCJul 17, 08:59 UTC55m
2026-07-17 FDX66 GDL → MEM Jul 17, 02:10 UTCJul 17, 04:53 UTC2h 43m
2026-07-16 FDX265 OAK → MEM Jul 16, 20:49 UTCJul 17, 04:54 UTC8h 5m
2026-07-16 FDX266 - Jul 16, 09:45 UTCJul 16, 17:54 UTC8h 10m
2026-07-16 FDX1377 - Jul 16, 02:15 UTCJul 16, 04:05 UTC1h 50m
2026-07-15 FDX3700 - Jul 15, 21:50 UTCJul 15, 23:10 UTC1h 20m
2026-07-15 FDX3631 TPA → IND Jul 15, 12:35 UTCJul 15, 14:25 UTC1h 50m
2026-07-15 FDX1410 - Jul 15, 08:35 UTCJul 15, 10:05 UTC1h 30m
2026-07-15 FDX2200 - Jul 15, 02:55 UTCJul 15, 05:05 UTC2h 10m
2026-07-14 FDX398 - Jul 14, 22:05 UTCJul 14, 23:50 UTC1h 44m
2026-07-14 FDX694 - Jul 14, 12:15 UTCJul 14, 13:45 UTC1h 30m
2026-07-14 FDX1434 - Jul 14, 08:40 UTCJul 14, 10:20 UTC1h 40m
2026-07-14 FDX1335 - Jul 14, 02:10 UTCJul 14, 03:30 UTC1h 20m
2026-07-11 FDX505 - Jul 11, 22:10 UTCJul 11, 23:25 UTC1h 15m
2026-07-11 FDX505 MEM → DTW Jul 11, 22:08 UTCJul 11, 23:24 UTC1h 16m
2026-07-11 FDX62 - Jul 11, 14:00 UTCJul 11, 17:40 UTC3h 40m
2026-07-11 FDX51 - Jul 11, 12:00 UTCJul 11, 12:20 UTC20m
2026-07-11 FDX51 - Jul 11, 08:40 UTCJul 11, 10:35 UTC1h 55m
2026-07-11 FDX1207 - Jul 11, 02:05 UTCJul 11, 05:40 UTC3h 35m
2026-07-11 FDX1207 SJC → MEM Jul 11, 02:01 UTCJul 11, 05:40 UTC3h 39m
2026-07-10 FDX1207 OAK → SJC Jul 10, 23:50 UTCJul 11, 00:10 UTC20m
2026-07-10 FDX1419 - Jul 10, 08:05 UTCJul 10, 11:45 UTC3h 40m
2026-07-10 FDX1419 MEM → OAK Jul 10, 08:00 UTCJul 10, 11:46 UTC3h 46m
2026-07-10 FDX54 - Jul 10, 02:40 UTCJul 10, 05:15 UTC2h 35m
2026-07-10 FDX54 TLC → MEM Jul 10, 02:33 UTCJul 10, 05:15 UTC2h 42m
2026-07-09 FDX253 - Jul 9, 19:40 UTCJul 9, 21:40 UTC2h 0m
2026-07-09 FDX253 MEM → GDL Jul 9, 19:38 UTCJul 9, 22:26 UTC2h 48m
2026-07-09 FDX841 SEA → MEM Jul 9, 12:05 UTCJul 9, 15:15 UTC3h 10m
2026-07-08 FDX307 - Jul 8, 21:50 UTCJul 9, 01:05 UTC3h 15m
2026-07-08 FDX416 - Jul 8, 12:40 UTCJul 8, 15:15 UTC2h 35m
2026-07-08 FDX1710 IND → BOS Jul 8, 08:30 UTCJul 8, 10:15 UTC1h 45m
2026-07-08 FDX1648 - Jul 8, 02:35 UTCJul 8, 06:00 UTC3h 25m
2026-07-07 FDX1701 IND → ONT Jul 7, 08:30 UTCJul 7, 12:00 UTC3h 30m
2026-07-07 FDX1612 JFK → IND Jul 7, 03:01 UTCJul 7, 04:40 UTC1h 39m
2026-07-07 FDX1612 JFK → IND Jul 7, 03:05 UTCJul 7, 04:45 UTC1h 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 N144FE page for operator, model, and routing details .

Mode-S A0B20E frequently asked

What is Mode-S code A0B20E?
A0B20E is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N144FE.
Where is Mode-S A0B20E registered?
Mode-S code A0B20E 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 A0B20E broadcasting right now?
Yes. Mode-S A0B20E is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0B20E, octal 50131016, decimal 10,531,342.
What flights does A0B20E operate?
Mode-S A0B20E has broadcast 20 distinct callsigns, including FDX54, FDX265, FDX66, FDX266, FDX694.