Apparatus

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sensors Mode-S transponder

A246CB

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N246FE · BOEING 767-300 · operated by BOEING CO

Hex
A246CB
Octal
50443313
Decimal
10,634,955
Country
US
Tail
N246FE
Type
B763
No current signal · last broadcast 2h ago
Flights observed
169
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A246CB.

Country allocation

The ICAO 24-bit address A246CB 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
FDX455 - 4 2026-07-03
FDX1874 FedEx Express 4 2026-06-11
FDX1359 FedEx Express 4 2026-04-15
FDX764 FedEx Express 3 2026-04-20
FDX1601 FedEx Express 3 2026-06-03
FDX1573 FedEx Express 3 2026-04-14
FDX1401 - 3 2026-06-23
FDX1292 FedEx Express 3 2026-04-23
FDX986 - 2 2026-07-06
FDX944 - 2 2026-07-02
FDX916 FedEx Express 2 2026-05-10
FDX694 - 2 2026-07-08
FDX657 - 2 2026-07-02
FDX644 FedEx Express 2 2026-05-26
FDX52 FedEx Express 2 2026-05-28
FDX51 FedEx Express 2 2026-04-18
FDX476 FedEx Express 2 2026-06-03
FDX2638 FedEx Express 2 2026-06-09
FDX251 FedEx Express 2 2026-05-27
FDX1738 FedEx Express 2 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 FDX690 - Jul 14, 14:10 UTCJul 14, 17:40 UTC3h 30m
2026-07-14 FDX1705 IND → OAK Jul 14, 08:30 UTCJul 14, 12:07 UTC3h 37m
2026-07-14 FDX1705 IND → OAK Jul 14, 08:30 UTCJul 14, 12:10 UTC3h 40m
2026-07-14 FDX1635 - Jul 14, 03:10 UTCJul 14, 04:10 UTC1h 0m
2026-07-14 FDX1635 CLT → IND Jul 14, 03:05 UTCJul 14, 04:07 UTC1h 2m
2026-07-11 FDX1492 - Jul 11, 09:35 UTCJul 11, 10:40 UTC1h 5m
2026-07-11 FDX141 - Jul 11, 02:05 UTCJul 11, 05:25 UTC3h 20m
2026-07-10 FDX140 - Jul 10, 08:55 UTCJul 10, 12:20 UTC3h 25m
2026-07-10 FDX1203 - Jul 10, 01:25 UTCJul 10, 02:50 UTC1h 25m
2026-07-09 FDX1722 - Jul 9, 08:45 UTCJul 9, 09:35 UTC50m
2026-07-09 FDX1678 PHX → IND Jul 9, 02:50 UTCJul 9, 05:45 UTC2h 55m
2026-07-08 FDX904 - Jul 8, 20:55 UTCJul 8, 23:35 UTC2h 40m
2026-07-08 FDX694 - Jul 8, 11:35 UTCJul 8, 13:15 UTC1h 40m
2026-07-08 FDX1434 - Jul 8, 07:55 UTCJul 8, 09:30 UTC1h 35m
2026-07-08 FDX1381 - Jul 8, 00:40 UTCJul 8, 04:00 UTC3h 20m
2026-07-06 FDX986 - Jul 6, 23:10 UTCJul 7, 02:45 UTC3h 35m
2026-07-06 FDX986 MEM → OAK Jul 6, 23:06 UTCJul 7, 02:45 UTC3h 39m
2026-07-03 FDX455 - Jul 3, 13:50 UTCJul 3, 16:50 UTC3h 0m
2026-07-02 FDX944 - Jul 2, 20:30 UTCJul 2, 23:45 UTC3h 15m
2026-07-02 FDX657 BOS → MEM Jul 2, 12:00 UTCJul 2, 14:25 UTC2h 25m
2026-07-02 FDX657 - Jul 2, 12:00 UTCJul 2, 14:25 UTC2h 25m
2026-07-02 FDX1406 - Jul 2, 08:25 UTCJul 2, 10:35 UTC2h 10m
2026-07-02 FDX1247 ORD → MEM Jul 2, 04:15 UTCJul 2, 05:30 UTC1h 15m
2026-07-01 FDX1405 - Jul 1, 09:35 UTCJul 1, 10:50 UTC1h 15m
2026-07-01 FDX1208 - Jul 1, 02:10 UTCJul 1, 05:25 UTC3h 15m
2026-07-01 FDX1208 GEG → MEM Jul 1, 02:06 UTCJul 1, 05:25 UTC3h 19m
2026-06-30 FDX302 - Jun 30, 21:15 UTCJul 1, 00:35 UTC3h 20m
2026-06-30 FDX402 - Jun 30, 15:00 UTCJun 30, 18:25 UTC3h 25m
2026-06-30 FDX1476 - Jun 30, 10:00 UTCJun 30, 13:20 UTC3h 20m
2026-06-30 FDX1253 - Jun 30, 01:45 UTCJun 30, 03:45 UTC2h 0m
2026-06-27 FDX1497 - Jun 27, 08:55 UTCJun 27, 10:50 UTC1h 55m
2026-06-26 FDX455 - Jun 26, 13:49 UTCJun 26, 16:44 UTC2h 55m
2026-06-26 FDX455 ONT → MEM Jun 26, 13:45 UTCJun 26, 16:43 UTC2h 58m
2026-06-25 FDX944 - Jun 25, 20:05 UTCJun 25, 23:24 UTC3h 20m
2026-06-25 FDX841 SEA → MEM Jun 25, 11:59 UTCJun 25, 14:59 UTC3h 0m
2026-06-24 FDX307 - Jun 24, 21:34 UTCJun 25, 00:55 UTC3h 20m
2026-06-24 FDX400 - Jun 24, 14:24 UTCJun 24, 17:40 UTC3h 15m
2026-06-24 FDX1468 - Jun 24, 08:39 UTCJun 24, 12:30 UTC3h 50m
2026-06-24 FDX1201 - Jun 24, 02:20 UTCJun 24, 03:24 UTC1h 5m
2026-06-23 FDX1401 - Jun 23, 09:24 UTCJun 23, 10:35 UTC1h 10m
2026-06-23 FDX1401 MEM → DFW Jun 23, 09:19 UTCJun 23, 10:33 UTC1h 14m
2026-06-23 FDX1213 - Jun 23, 02:20 UTCJun 23, 05:20 UTC3h 0m
2026-06-22 FDX1805 PDX → BUR Jun 22, 21:35 UTCJun 22, 23:24 UTC1h 50m
2026-06-20 FDX1415 - Jun 20, 08:29 UTCJun 20, 12:19 UTC3h 50m
2026-06-20 FDX1358 - Jun 20, 02:44 UTCJun 20, 04:14 UTC1h 30m
2026-06-19 FDX1407 - Jun 19, 08:54 UTCJun 19, 10:29 UTC1h 35m
2026-06-19 FDX2260 CVG → MEM Jun 19, 03:15 UTCJun 19, 04:14 UTC1h 0m
2026-06-18 FDX1460 - Jun 18, 10:00 UTCJun 18, 10:55 UTC55m
2026-06-18 FDX1460 MEM → CVG Jun 18, 09:56 UTCJun 18, 10:52 UTC56m
2026-06-18 FDX1247 - Jun 18, 05:40 UTCJun 18, 07:00 UTC1h 20m

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 N246FE page for operator, model, and routing details .

Mode-S A246CB frequently asked

What is Mode-S code A246CB?
A246CB is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N246FE.
Where is Mode-S A246CB registered?
Mode-S code A246CB 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 A246CB broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A246CB, octal 50443313, decimal 10,634,955.
What flights does A246CB operate?
Mode-S A246CB has broadcast 20 distinct callsigns, including FDX455, FDX1874, FDX1359, FDX764, FDX1601.