Apparatus

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sensors Mode-S transponder

A1500A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N184FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A1500A
Octal
50250012
Decimal
10,571,786
Country
US
Tail
N184FE
Type
B763
Broadcasting now · callsign FDX1216 · 35,000 ft
Flights observed
210
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 12:35 UTC

Current position

A1500A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A1500A 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
FDX1188 - 5 2026-06-18
FDX415 - 4 2026-06-23
FDX1238 - 4 2026-07-08
FDX529 - 3 2026-06-14
FDX3609 - 3 2026-06-16
FDX258 - 3 2026-07-01
FDX1774 FedEx Express 3 2026-04-24
FDX1701 - 3 2026-06-24
FDX1648 - 3 2026-06-25
FDX1625 - 3 2026-06-19
FDX1601 - 3 2026-07-16
FDX1476 FedEx Express 3 2026-07-25
FDX1440 - 3 2026-06-27
FDX1429 FedEx Express 3 2026-04-16
FDX142 FedEx Express 3 2026-05-27
FDX874 FedEx Express 2 2026-05-17
FDX653 FedEx Express 2 2026-05-24
FDX57 FedEx Express 2 2026-04-17
FDX52 FedEx Express 2 2026-07-22
FDX509 FedEx Express 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1476 MEM → GEG Jul 25, 09:05 UTCJul 25, 12:30 UTC3h 25m
2026-07-25 FDX1281 GSP → MEM Jul 25, 02:00 UTCJul 25, 03:05 UTC1h 5m
2026-07-25 FDX1281 GSP → MEM Jul 25, 01:58 UTCJul 25, 03:04 UTC1h 6m
2026-07-24 FDX1506 MEM → GSP Jul 24, 09:15 UTCJul 24, 10:15 UTC1h 0m
2026-07-24 FDX1213 BUR → MEM Jul 24, 01:55 UTCJul 24, 05:15 UTC3h 20m
2026-07-23 FDX1417 MEM → BUR Jul 23, 08:05 UTCJul 23, 11:25 UTC3h 20m
2026-07-23 FDX1248 GSO → MEM Jul 23, 02:00 UTCJul 23, 03:20 UTC1h 20m
2026-07-22 FDX1580 MEM → LAX Jul 22, 11:10 UTCJul 22, 11:35 UTC25m
2026-07-22 FDX52 SJU → MEM Jul 22, 01:30 UTCJul 22, 05:10 UTC3h 40m
2026-07-22 FDX52 SJU → MEM Jul 22, 01:25 UTCJul 22, 05:10 UTC3h 45m
2026-07-21 FDX251 MEM → SJU Jul 21, 23:30 UTCJul 21, 23:40 UTC10m
2026-07-21 FDX251 MEM → SJU Jul 21, 20:05 UTCJul 21, 21:55 UTC1h 50m
2026-07-21 FDX404 - Jul 21, 12:15 UTCJul 21, 13:35 UTC1h 20m
2026-07-21 FDX1711 IND → DTW Jul 21, 09:20 UTCJul 21, 10:10 UTC50m
2026-07-21 FDX1617 IAH → IND Jul 21, 03:30 UTCJul 21, 05:25 UTC1h 55m
2026-07-17 FDX1732 - Jul 17, 08:25 UTCJul 17, 10:05 UTC1h 40m
2026-07-17 FDX1732 IND → IAH Jul 17, 08:22 UTCJul 17, 10:05 UTC1h 43m
2026-07-17 FDX151 - Jul 17, 02:15 UTCJul 17, 03:25 UTC1h 10m
2026-07-17 FDX151 YYZ → IND Jul 17, 02:14 UTCJul 17, 03:24 UTC1h 10m
2026-07-16 FDX150 - Jul 16, 08:45 UTCJul 16, 09:50 UTC1h 5m
2026-07-16 FDX150 IND → YYZ Jul 16, 08:42 UTCJul 16, 09:45 UTC1h 3m
2026-07-16 FDX1601 DFW → IND Jul 16, 03:00 UTCJul 16, 04:40 UTC1h 40m
2026-07-15 FDX1735 IND → DFW Jul 15, 08:25 UTCJul 15, 10:00 UTC1h 35m
2026-07-15 FDX1601 - Jul 15, 02:45 UTCJul 15, 04:25 UTC1h 40m
2026-07-14 FDX1735 - Jul 14, 08:05 UTCJul 14, 09:40 UTC1h 35m
2026-07-14 FDX1611 - Jul 14, 02:30 UTCJul 14, 03:10 UTC40m
2026-07-12 FDX505 - Jul 12, 22:55 UTCJul 13, 00:15 UTC1h 20m
2026-07-12 FDX505 MEM → DTW Jul 12, 22:51 UTCJul 13, 00:14 UTC1h 23m
2026-07-11 FDX846 EWR → MEM Jul 11, 11:50 UTCJul 11, 13:15 UTC1h 25m
2026-07-10 FDX1711 IND → DTW Jul 10, 09:05 UTCJul 10, 09:50 UTC45m
2026-07-10 FDX1622 PIT → IND Jul 10, 01:55 UTCJul 10, 02:45 UTC50m
2026-07-09 FDX1446 - Jul 9, 08:10 UTCJul 9, 09:30 UTC1h 20m
2026-07-09 FDX2361 - Jul 9, 04:35 UTCJul 9, 05:25 UTC50m
2026-07-09 FDX2361 SDF → MEM Jul 9, 04:35 UTCJul 9, 05:24 UTC49m
2026-07-08 FDX722 OLV → SDF Jul 8, 23:15 UTCJul 9, 00:05 UTC50m
2026-07-08 FDX402 - Jul 8, 18:15 UTCJul 8, 21:30 UTC3h 15m
2026-07-08 FDX402 GEG → LAX Jul 8, 14:05 UTCJul 8, 16:25 UTC2h 20m
2026-07-08 FDX1476 - Jul 8, 08:50 UTCJul 8, 12:10 UTC3h 20m
2026-07-08 FDX1238 - Jul 8, 02:45 UTCJul 8, 04:05 UTC1h 20m
2026-07-08 FDX1238 MKE → MEM Jul 8, 02:43 UTCJul 8, 04:05 UTC1h 22m
2026-07-07 FDX1437 - Jul 7, 09:40 UTCJul 7, 10:50 UTC1h 10m
2026-07-07 FDX1208 - Jul 7, 01:40 UTCJul 7, 04:55 UTC3h 15m
2026-07-03 FDX1476 - Jul 3, 08:50 UTCJul 3, 12:15 UTC3h 25m
2026-07-03 FDX1224 - Jul 3, 01:55 UTCJul 3, 03:35 UTC1h 40m
2026-07-02 FDX1542 - Jul 2, 09:35 UTCJul 2, 11:05 UTC1h 30m
2026-07-01 FDX258 - Jul 1, 08:55 UTCJul 1, 21:05 UTC12h 10m
2026-07-01 FDX1344 - Jul 1, 02:15 UTCJul 1, 04:45 UTC2h 30m
2026-06-30 FDX1414 - Jun 30, 11:00 UTCJun 30, 13:35 UTC2h 35m
2026-06-30 FDX1240 - Jun 30, 02:20 UTCJun 30, 05:10 UTC2h 50m
2026-06-27 FDX1440 - Jun 27, 10:10 UTCJun 27, 13:15 UTC3h 5m

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 N184FE page for operator, model, and routing details .

Mode-S A1500A frequently asked

What is Mode-S code A1500A?
A1500A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N184FE.
Where is Mode-S A1500A registered?
Mode-S code A1500A 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 A1500A broadcasting right now?
Yes. Mode-S A1500A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A1500A, octal 50250012, decimal 10,571,786.
What flights does A1500A operate?
Mode-S A1500A has broadcast 20 distinct callsigns, including FDX1188, FDX415, FDX1238, FDX529, FDX3609.