Apparatus

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sensors Mode-S transponder

A0AE57

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N143FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A0AE57
Octal
50127127
Decimal
10,530,391
Country
US
Tail
N143FE
Type
B763
No current signal · last broadcast 20d ago
Flights observed
153
Distinct callsigns
20
Country
US
Last broadcast
20d ago

Last known position

Most recent position reported by Mode-S A0AE57.

Country allocation

The ICAO 24-bit address A0AE57 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
FDX1804 - 6 2026-06-23
FDX2613 FedEx Express 5 2026-06-11
FDX1415 FedEx Express 5 2026-04-16
FDX1411 FedEx Express 4 2026-06-05
FDX131 FedEx Express 4 2026-05-02
FDX945 - 3 2026-06-21
FDX54 FedEx Express 3 2026-05-29
FDX53 FedEx Express 3 2026-05-02
FDX3724 FedEx Express 3 2026-04-15
FDX266 FedEx Express 3 2026-06-16
FDX1840 FedEx Express 3 2026-06-25
FDX1713 FedEx Express 3 2026-06-10
FDX1645 FedEx Express 3 2026-04-29
FDX130 FedEx Express 3 2026-05-01
FDX1265 - 3 2026-06-27
FDX1219 FedEx Express 3 2026-04-16
FDX9121 FedEx Express 2 2026-06-15
FDX89 FedEx Express 2 2026-05-18
FDX825 FedEx Express 2 2026-05-12
FDX82 FedEx Express 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-27 FDX3646 ONT → IND Jun 27, 15:00 UTCJun 27, 18:20 UTC3h 20m
2026-06-27 FDX1265 - Jun 27, 03:34 UTCJun 27, 05:04 UTC1h 30m
2026-06-27 FDX1265 - Jun 27, 01:54 UTCJun 27, 02:39 UTC45m
2026-06-26 FDX1537 - Jun 26, 09:50 UTCJun 26, 11:14 UTC1h 25m
2026-06-26 FDX2200 FLL → MEM Jun 26, 02:34 UTCJun 26, 04:34 UTC2h 0m
2026-06-25 FDX398 - Jun 25, 22:10 UTCJun 26, 00:05 UTC1h 55m
2026-06-25 FDX876 - Jun 25, 13:20 UTCJun 25, 15:50 UTC2h 30m
2026-06-25 FDX1879 OAK → SLC Jun 25, 09:38 UTCJun 25, 10:54 UTC1h 16m
2026-06-25 FDX1879 OAK → SLC Jun 25, 09:40 UTCJun 25, 10:55 UTC1h 15m
2026-06-25 FDX1840 LAX → SAN Jun 25, 03:54 UTCJun 25, 04:29 UTC35m
2026-06-25 FDX1840 LAX → SAN Jun 25, 03:49 UTCJun 25, 04:25 UTC36m
2026-06-25 FDX1840 LAX → SAN Jun 25, 01:54 UTCJun 25, 02:19 UTC25m
2026-06-24 FDX3824 SEA → OAK Jun 24, 14:01 UTCJun 24, 15:42 UTC1h 41m
2026-06-24 FDX3824 SEA → OAK Jun 24, 14:04 UTCJun 24, 15:44 UTC1h 40m
2026-06-24 FDX1885 OAK → SEA Jun 24, 09:45 UTCJun 24, 11:09 UTC1h 25m
2026-06-24 FDX1807 PDX → OAK Jun 24, 04:00 UTCJun 24, 05:20 UTC1h 20m
2026-06-24 FDX1807 PDX → OAK Jun 24, 03:57 UTCJun 24, 05:17 UTC1h 20m
2026-06-23 FDX3704 IND → PDX Jun 23, 21:10 UTCJun 24, 01:19 UTC4h 10m
2026-06-23 FDX3629 PHX → IND Jun 23, 13:09 UTCJun 23, 16:05 UTC2h 55m
2026-06-23 FDX1865 - Jun 23, 09:49 UTCJun 23, 11:19 UTC1h 30m
2026-06-23 FDX1804 - Jun 23, 05:15 UTCJun 23, 05:49 UTC35m
2026-06-23 FDX1804 - Jun 23, 04:09 UTCJun 23, 04:19 UTC10m
2026-06-23 FDX1804 - Jun 23, 03:15 UTCJun 23, 03:39 UTC25m
2026-06-21 FDX945 MEM → SLC Jun 21, 21:40 UTCJun 22, 00:34 UTC2h 54m
2026-06-19 FDX1265 - Jun 19, 01:45 UTCJun 19, 03:15 UTC1h 30m
2026-06-18 FDX1537 - Jun 18, 10:05 UTCJun 18, 11:40 UTC1h 35m
2026-06-18 FDX1253 - Jun 18, 02:20 UTCJun 18, 04:30 UTC2h 10m
2026-06-17 FDX1497 - Jun 17, 08:30 UTCJun 17, 10:10 UTC1h 40m
2026-06-16 FDX265 OAK → GDL Jun 16, 20:15 UTCJun 17, 04:21 UTC8h 5m
2026-06-16 FDX266 GDL → OAK Jun 16, 14:16 UTCJun 16, 17:41 UTC3h 25m
2026-06-16 FDX65 - Jun 16, 09:45 UTCJun 16, 17:45 UTC8h 0m
2026-06-16 FDX66 - Jun 16, 02:24 UTCJun 16, 04:25 UTC2h 0m
2026-06-15 FDX9121 MEM → BQN Jun 15, 20:34 UTCJun 15, 22:45 UTC2h 10m
2026-06-15 FDX9121 MEM → BQN Jun 15, 20:33 UTCJun 15, 23:27 UTC2h 54m
2026-06-15 FDX9122 BQN → MEM Jun 15, 09:35 UTCJun 15, 17:10 UTC7h 35m
2026-06-14 FDX644 JFK → MEM Jun 14, 11:53 UTCJun 14, 14:04 UTC2h 11m
2026-06-14 FDX644 JFK → MEM Jun 14, 11:55 UTCJun 14, 14:05 UTC2h 10m
2026-06-12 FDX1483 MEM → JFK Jun 12, 09:25 UTCJun 12, 11:25 UTC2h 0m
2026-06-12 FDX1299 IAH → MEM Jun 12, 03:30 UTCJun 12, 04:40 UTC1h 10m
2026-06-11 FDX1732 IND → IAH Jun 11, 08:25 UTCJun 11, 10:10 UTC1h 45m
2026-06-11 FDX2613 MCI → IND Jun 11, 03:25 UTCJun 11, 04:45 UTC1h 20m
2026-06-11 FDX2613 MCI → IND Jun 11, 03:20 UTCJun 11, 04:40 UTC1h 20m
2026-06-10 FDX1713 IND → MCI Jun 10, 08:40 UTCJun 10, 09:35 UTC55m
2026-06-10 FDX1617 IAH → IND Jun 10, 01:10 UTCJun 10, 03:00 UTC1h 50m
2026-06-05 FDX1411 MEM → IAH Jun 5, 09:10 UTCJun 5, 10:15 UTC1h 5m
2026-06-05 FDX1411 MEM → IAH Jun 5, 09:02 UTCJun 5, 10:12 UTC1h 10m
2026-06-05 FDX1223 SEA → MEM Jun 5, 01:50 UTCJun 5, 05:25 UTC3h 35m
2026-06-04 FDX1717 IND → SEA Jun 4, 08:20 UTCJun 4, 12:20 UTC4h 0m
2026-06-04 FDX1618 MSP → IND Jun 4, 02:45 UTCJun 4, 03:55 UTC1h 10m
2026-06-03 FDX1718 IND → MSP Jun 3, 08:50 UTCJun 3, 10:05 UTC1h 15m

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 N143FE page for operator, model, and routing details .

Mode-S A0AE57 frequently asked

What is Mode-S code A0AE57?
A0AE57 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N143FE.
Where is Mode-S A0AE57 registered?
Mode-S code A0AE57 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 A0AE57 broadcasting right now?
No active broadcast right now. Last signal was 20d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0AE57, octal 50127127, decimal 10,530,391.
What flights does A0AE57 operate?
Mode-S A0AE57 has broadcast 20 distinct callsigns, including FDX1804, FDX2613, FDX1415, FDX1411, FDX131.