Apparatus

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sensors Mode-S transponder

A0E4B2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N157FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A0E4B2
Octal
50162262
Decimal
10,544,306
Country
US
Tail
N157FE
Type
B763
No current signal · last broadcast Jul 25, 12:15 UTC
Flights observed
215
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 12:15 UTC

Last known position

Most recent position reported by Mode-S A0E4B2.

Country allocation

The ICAO 24-bit address A0E4B2 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
FDX3901 - 5 2026-07-18
FDX265 - 5 2026-07-02
FDX53 - 4 2026-06-15
FDX266 - 4 2026-07-02
FDX1273 FedEx Express 4 2026-06-02
FDX1243 FedEx Express 4 2026-07-23
FDX915 - 3 2026-04-13
FDX864 - 3 2026-04-14
FDX66 - 3 2026-07-03
FDX546 FedEx Express 3 2026-04-14
FDX54 - 3 2026-06-16
FDX1835 - 3 2026-07-15
FDX1717 FedEx Express 3 2026-04-15
FDX1650 FedEx Express 3 2026-04-15
FDX1523 FedEx Express 3 2026-06-02
FDX1466 FedEx Express 3 2026-04-24
FDX1438 FedEx Express 3 2026-07-25
FDX1384 FedEx Express 3 2026-04-29
FDX1377 - 3 2026-07-07
FDX1268 FedEx Express 3 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1438 MEM → ONT Jul 25, 09:10 UTCJul 25, 12:15 UTC3h 5m
2026-07-25 FDX1346 CLE → MEM Jul 25, 02:20 UTCJul 25, 03:45 UTC1h 25m
2026-07-25 FDX1346 CLE → MEM Jul 25, 02:16 UTCJul 25, 03:40 UTC1h 24m
2026-07-24 FDX1731 IND → CLE Jul 24, 08:50 UTCJul 24, 09:30 UTC40m
2026-07-24 FDX1648 ONT → IND Jul 24, 02:40 UTCJul 24, 06:05 UTC3h 25m
2026-07-23 FDX1438 MEM → ONT Jul 23, 10:20 UTCJul 23, 13:20 UTC3h 0m
2026-07-23 FDX1438 MEM → ONT Jul 23, 10:15 UTCJul 23, 13:18 UTC3h 3m
2026-07-23 FDX1243 CLT → MEM Jul 23, 02:30 UTCJul 23, 03:40 UTC1h 10m
2026-07-22 FDX1631 CLE → IND Jul 22, 02:50 UTCJul 22, 03:30 UTC40m
2026-07-21 FDX361 MEM → PIT Jul 21, 22:10 UTCJul 21, 23:30 UTC1h 20m
2026-07-21 FDX451 LAX → MEM Jul 21, 12:40 UTCJul 21, 16:00 UTC3h 20m
2026-07-21 FDX451 LAX → MEM Jul 21, 12:35 UTCJul 21, 16:01 UTC3h 26m
2026-07-19 FDX3951 EWR → ONT Jul 19, 00:26 UTCJul 19, 05:30 UTC5h 4m
2026-07-19 FDX3951 EWR → ONT Jul 19, 00:30 UTCJul 19, 05:30 UTC5h 0m
2026-07-18 FDX3901 - Jul 18, 13:55 UTCJul 18, 19:10 UTC5h 15m
2026-07-18 FDX3901 LAX → EWR Jul 18, 13:54 UTCJul 18, 19:05 UTC5h 11m
2026-07-17 FDX1151 - Jul 17, 08:30 UTCJul 17, 10:55 UTC2h 25m
2026-07-17 FDX1107 ORD → AFW Jul 17, 04:14 UTCJul 17, 05:55 UTC1h 40m
2026-07-16 FDX304 MEM → ORD Jul 16, 22:10 UTCJul 16, 23:25 UTC1h 15m
2026-07-16 FDX698 - Jul 16, 13:34 UTCJul 16, 16:49 UTC3h 15m
2026-07-16 FDX1853 OAK → ONT Jul 16, 09:20 UTCJul 16, 10:15 UTC55m
2026-07-16 FDX1807 PDX → OAK Jul 16, 03:55 UTCJul 16, 05:30 UTC1h 35m
2026-07-15 FDX3704 IND → PDX Jul 15, 21:20 UTCJul 16, 01:05 UTC3h 45m
2026-07-15 FDX3704 IND → PDX Jul 15, 21:20 UTCJul 16, 01:00 UTC3h 40m
2026-07-15 FDX3617 - Jul 15, 13:20 UTCJul 15, 17:10 UTC3h 50m
2026-07-15 FDX1869 - Jul 15, 10:10 UTCJul 15, 11:05 UTC55m
2026-07-15 FDX1835 - Jul 15, 05:20 UTCJul 15, 06:10 UTC50m
2026-07-15 FDX1835 LAX → OAK Jul 15, 05:16 UTCJul 15, 06:08 UTC52m
2026-07-14 FDX3736 - Jul 14, 21:35 UTCJul 15, 01:10 UTC3h 34m
2026-07-14 FDX3631 TPA → IND Jul 14, 12:55 UTCJul 14, 14:40 UTC1h 45m
2026-07-14 FDX1410 - Jul 14, 09:00 UTCJul 14, 10:25 UTC1h 25m
2026-07-14 FDX1410 MEM → TPA Jul 14, 08:55 UTCJul 14, 10:20 UTC1h 25m
2026-07-14 FDX2209 - Jul 14, 01:50 UTCJul 14, 03:30 UTC1h 40m
2026-07-14 FDX2209 MCO → MEM Jul 14, 01:51 UTCJul 14, 03:25 UTC1h 34m
2026-07-12 FDX746 - Jul 12, 20:50 UTCJul 12, 22:20 UTC1h 30m
2026-07-12 FDX405 - Jul 12, 11:30 UTCJul 12, 13:30 UTC2h 0m
2026-07-11 FDX3709 IND → EWR Jul 11, 21:25 UTCJul 11, 22:50 UTC1h 25m
2026-07-11 FDX3645 - Jul 11, 11:55 UTCJul 11, 14:05 UTC2h 10m
2026-07-11 FDX3645 FLL → IND Jul 11, 11:51 UTCJul 11, 14:03 UTC2h 12m
2026-07-10 FDX1400 - Jul 10, 08:45 UTCJul 10, 10:35 UTC1h 50m
2026-07-10 FDX1344 - Jul 10, 02:05 UTCJul 10, 04:40 UTC2h 35m
2026-07-09 FDX1414 - Jul 9, 09:50 UTCJul 9, 12:15 UTC2h 25m
2026-07-09 FDX2283 IND → MEM Jul 9, 04:00 UTCJul 9, 05:00 UTC1h 0m
2026-07-08 FDX3629 PHX → IND Jul 8, 13:35 UTCJul 8, 16:45 UTC3h 10m
2026-07-08 FDX1748 - Jul 8, 08:30 UTCJul 8, 11:25 UTC2h 55m
2026-07-08 FDX1622 - Jul 8, 02:00 UTCJul 8, 02:50 UTC50m
2026-07-07 FDX1446 - Jul 7, 08:45 UTCJul 7, 10:00 UTC1h 15m
2026-07-07 FDX1377 - Jul 7, 02:20 UTCJul 7, 04:25 UTC2h 5m
2026-07-07 FDX1377 PHL → PHL Jul 7, 01:50 UTCJul 7, 01:55 UTC5m
2026-07-03 FDX1439 - Jul 3, 08:45 UTCJul 3, 10:30 UTC1h 45m

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 N157FE page for operator, model, and routing details .

Mode-S A0E4B2 frequently asked

What is Mode-S code A0E4B2?
A0E4B2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N157FE.
Where is Mode-S A0E4B2 registered?
Mode-S code A0E4B2 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 A0E4B2 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 12:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0E4B2, octal 50162262, decimal 10,544,306.
What flights does A0E4B2 operate?
Mode-S A0E4B2 has broadcast 20 distinct callsigns, including FDX3901, FDX265, FDX53, FDX266, FDX1273.