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sensors Mode-S transponder

A18665

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N198FE · BOEING 767-300 · operated by FEDERAL EXPRESS CORP

Hex
A18665
Octal
50303145
Decimal
10,585,701
Country
US
Tail
N198FE
Type
B763
Broadcasting now · callsign FDX1234 · 35,025 ft
Flights observed
218
Distinct callsigns
20
Country
US
Last broadcast
Jul 25, 10:45 UTC

Current position

A18665 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A18665 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
FDX1207 FedEx Express 6 2026-06-06
FDX358 FedEx Express 5 2026-07-23
FDX1475 FedEx Express 5 2026-06-12
FDX3646 FedEx Express 4 2026-07-22
FDX1603 - 4 2026-07-15
FDX1735 - 3 2026-07-10
FDX1450 - 3 2026-06-16
FDX1251 - 3 2026-06-13
FDX1212 FedEx Express 3 2026-04-18
FDX936 FedEx Express 2 2026-04-20
FDX904 FedEx Express 2 2026-05-30
FDX853 FedEx Express 2 2026-05-30
FDX62 FedEx Express 2 2026-06-20
FDX476 FedEx Express 2 2026-05-12
FDX436 FedEx Express 2 2026-05-21
FDX404 - 2 2026-06-25
FDX3724 FedEx Express 2 2026-05-20
FDX3711 FedEx Express 2 2026-05-19
FDX331 FedEx Express 2 2026-06-23
FDX2681 FedEx Express 2 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 FDX1405 MEM → ORD Jul 25, 09:25 UTCJul 25, 10:45 UTC1h 20m
2026-07-25 FDX1227 AUS → MEM Jul 25, 02:36 UTCJul 25, 03:55 UTC1h 19m
2026-07-25 FDX1227 AUS → MEM Jul 25, 02:40 UTCJul 25, 03:55 UTC1h 15m
2026-07-24 FDX1432 MEM → CLT Jul 24, 08:40 UTCJul 24, 09:50 UTC1h 10m
2026-07-24 FDX2209 MCO → MEM Jul 24, 01:50 UTCJul 24, 03:20 UTC1h 30m
2026-07-23 FDX358 MEM → OMA Jul 23, 21:45 UTCJul 23, 23:15 UTC1h 30m
2026-07-23 FDX455 - Jul 23, 12:10 UTCJul 23, 15:25 UTC3h 15m
2026-07-23 FDX1876 OAK → LAX Jul 23, 08:55 UTCJul 23, 09:45 UTC50m
2026-07-22 FDX3747 IND → OAK Jul 22, 20:55 UTCJul 23, 01:00 UTC4h 5m
2026-07-22 FDX3646 ONT → IND Jul 22, 13:50 UTCJul 22, 17:15 UTC3h 25m
2026-07-22 FDX1835 - Jul 22, 05:15 UTCJul 22, 05:25 UTC10m
2026-07-22 FDX1835 LAX → OAK Jul 22, 05:10 UTCJul 22, 06:00 UTC50m
2026-07-21 FDX3736 IND → LAX Jul 21, 21:25 UTCJul 22, 01:10 UTC3h 45m
2026-07-21 FDX3647 OAK → IND Jul 21, 13:55 UTCJul 21, 17:40 UTC3h 45m
2026-07-21 FDX1468 - Jul 21, 07:45 UTCJul 21, 11:10 UTC3h 25m
2026-07-21 FDX1226 JAX → MEM Jul 21, 01:45 UTCJul 21, 03:00 UTC1h 15m
2026-07-18 FDX1455 MEM → JAX Jul 18, 09:15 UTCJul 18, 10:30 UTC1h 15m
2026-07-18 FDX2203 PHX → MEM Jul 18, 03:30 UTCJul 18, 04:25 UTC55m
2026-07-18 FDX2203 PHX → MEM Jul 18, 02:00 UTCJul 18, 02:50 UTC51m
2026-07-17 FDX1722 - Jul 17, 08:49 UTCJul 17, 09:35 UTC45m
2026-07-17 FDX1678 PHX → IND Jul 17, 02:39 UTCJul 17, 05:45 UTC3h 5m
2026-07-16 FDX1865 OAK → PHX Jul 16, 09:30 UTCJul 16, 10:55 UTC1h 25m
2026-07-16 FDX1803 - Jul 16, 04:45 UTCJul 16, 05:35 UTC50m
2026-07-16 FDX1803 ONT → OAK Jul 16, 04:42 UTCJul 16, 05:35 UTC53m
2026-07-15 FDX3734 - Jul 15, 20:25 UTCJul 15, 23:45 UTC3h 20m
2026-07-15 FDX1603 ATL → IND Jul 15, 03:25 UTCJul 15, 04:30 UTC1h 5m
2026-07-14 FDX1774 IND → ATL Jul 14, 09:08 UTCJul 14, 10:06 UTC58m
2026-07-14 FDX1774 IND → ATL Jul 14, 09:10 UTCJul 14, 10:10 UTC1h 0m
2026-07-14 FDX1601 - Jul 14, 03:20 UTCJul 14, 05:00 UTC1h 40m
2026-07-10 FDX1735 - Jul 10, 07:50 UTCJul 10, 09:35 UTC1h 45m
2026-07-09 FDX3646 ONT → IND Jul 9, 13:40 UTCJul 9, 17:10 UTC3h 30m
2026-07-09 FDX3646 ONT → IND Jul 9, 13:35 UTCJul 9, 16:55 UTC3h 20m
2026-07-09 FDX1438 - Jul 9, 09:00 UTCJul 9, 12:05 UTC3h 5m
2026-07-09 FDX1438 MEM → ONT Jul 9, 08:55 UTCJul 9, 12:00 UTC3h 5m
2026-07-09 FDX1220 - Jul 9, 03:30 UTCJul 9, 05:25 UTC1h 55m
2026-07-08 FDX529 - Jul 8, 21:10 UTCJul 8, 23:30 UTC2h 20m
2026-07-08 FDX468 - Jul 8, 11:35 UTCJul 8, 13:00 UTC1h 25m
2026-07-08 FDX1552 - Jul 8, 08:45 UTCJul 8, 10:00 UTC1h 15m
2026-07-08 FDX1292 - Jul 8, 02:50 UTCJul 8, 05:00 UTC2h 10m
2026-07-07 FDX1483 - Jul 7, 08:40 UTCJul 7, 10:35 UTC1h 55m
2026-07-07 FDX1344 - Jul 7, 02:10 UTCJul 7, 04:35 UTC2h 25m
2026-07-03 FDX1414 - Jul 3, 09:45 UTCJul 3, 12:15 UTC2h 30m
2026-07-03 FDX1222 - Jul 3, 02:15 UTCJul 3, 05:20 UTC3h 5m
2026-07-02 FDX1754 IND → SAN Jul 2, 08:15 UTCJul 2, 11:55 UTC3h 40m
2026-07-02 FDX1627 ORD → IND Jul 2, 04:28 UTCJul 2, 05:00 UTC32m
2026-07-02 FDX1627 ORD → IND Jul 2, 04:30 UTCJul 2, 05:05 UTC35m
2026-07-01 FDX1706 - Jul 1, 09:00 UTCJul 1, 09:50 UTC50m
2026-07-01 FDX1602 - Jul 1, 03:25 UTCJul 1, 04:00 UTC35m
2026-06-30 FDX1157 - Jun 30, 07:40 UTCJun 30, 09:25 UTC1h 45m
2026-06-30 FDX1121 SAT → AFW Jun 30, 03:45 UTCJun 30, 04:25 UTC40m

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 N198FE page for operator, model, and routing details .

Mode-S A18665 frequently asked

What is Mode-S code A18665?
A18665 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N198FE.
Where is Mode-S A18665 registered?
Mode-S code A18665 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 A18665 broadcasting right now?
Yes. Mode-S A18665 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A18665, octal 50303145, decimal 10,585,701.
What flights does A18665 operate?
Mode-S A18665 has broadcast 20 distinct callsigns, including FDX1207, FDX358, FDX1475, FDX3646, FDX1603.